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Labour Theory of Value

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Labour Theory of Value

The labor theories of value (LTV) are heterodox economic theories of value that argue the value of a commodity is only related to the labor needed to produce or obtain that commodity and not to other factors of production (except as those elements can be regarded as embodied labour.) Presently the concept is most often associated with Marxian economics, although it appears as a foundation to earlier classical economic theorists such as Adam Smith and David Ricardo and later also in anarchist economics.

Definitions of value and labor

When speaking in terms of a labor theory of value, value, without any qualifying adjective should theoretically refer to the amount of labor necessary to the production of a marketable commodity, including the labor necessary to the development of any real capital employed in the production. Both David Ricardo and Karl Marx attempted to quantify and embody all labor components in order to set the real price, or natural price of a commodity.[1] The labor theory of value, as presented by Adam Smith, however, did not require the quantification of all past labor, nor did it deal with the labor needed to create the tools (capital) that might be employed in the production of a commodity. The Smith theory of value was very similar to the later utility theories in that Smith proclaimed that a commodity was worth whatever labor it would command in others (value in trade) or whatever labor it would "save" the self (value in use), or both. But this "value" is subject to supply and demand at a particular time.

The real price of every thing, what every thing really costs to the man who wants to acquire it, is the toil and trouble of acquiring it. What every thing is really worth to the man who has acquired it, and who wants to dispose of it or exchange it for something else, is the toil and trouble which it can save to himself, and which it can impose upon other people. (Wealth of Nations Book 1, chapter V)

Smith's theory of price (which for many is the same as value) has nothing to do with the past labor spent in the production of a commodity. It speaks only of the labor that can be "commanded" or "saved" at present. If there is no use for a buggy whip then the item is economically worthless in trade or in use, regardless of all the labor spent in its creation. Duncan (1995, 2000, 2004) has provided remarkable insights into how Smith's theory of value accounts for role of nature in generation of value.

Distinctions of economically pertinent labor

A person drinking water from a good stream at his doorstep must "spend" labor to gain this value, at least if this action is relevant to economics. In terms of modern orthodox terminology it is important to note that labor, at least in Smith's approach, is the opposite of utility—..disutility, pain, toil etc. Labor that is pleasant in itself is only therefore partly labor, or perhaps not labor at all (however, see opportunity cost). Highly skilled labor, on the other hand, owes part of its produce to an "investment" in training, and is almost like capital (hence the modern concept of human capital). So many types of pleasant labor can be described as a result of an earlier and more painful investment.

In the example of a person going to a stream at his doorstep, if this is a pleasant activity, it is not labor. If it is not pleasant it could be relevant to economics because, for example, the house could be built closer to the stream, plumbing could be installed, a person could be employed to fetch water, or investment in a better path to the water might be worth considering.

But the above way of defining value is not the only one.

Value "in use" is the usefulness of this commodity, its utility. A classical paradox often comes up when considering this type of value. In the words of Adam Smith:

The word VALUE, it is to be observed, has two different meanings, and sometimes expresses the utility of some particular object, and sometimes the power of purchasing other goods which the possession of that object conveys. The one may be called 'value in use ;' the other, 'value in exchange.' The things which have the greatest value in use have frequently little or no value in exchange; and on the contrary, those which have the greatest value in exchange have frequently little or no value in use. Nothing is more useful than water: but it will purchase scarce any thing; scarce any thing can be had in exchange for it. A diamond, on the contrary, has scarce any value in use; but a very great quantity of other goods may frequently be had in exchange for it. (Wealth of Nations Book 1, chapter IV)

Value "in exchange" is the relative proportion with which this commodity exchanges for another commodity (in other words, its price in the case of money). It is relative to labor as explained by Adam Smith:

The value of any commodity, ... to the person who possesses it, and who means not to use or consume it himself, but to exchange it for other commodities, is equal to the quantity of labour which it enables him to purchase or command. Labour, therefore, is the real measure of the exchangeable value of all commodities (Wealth of Nations Book 1, chapter V; emphasis added).

Value (without qualification) as an intrinsic worth that stands without the process of exchange. Marx defined the value of the commodity by the third definition. In his terms, value is the 'socially necessary abstract labor' embodied in a commodity. In Ricardo and other classical economists, this definition serves as a measure of "real cost", "absolute value", or a "measure of value" invariable under changes in distribution and technology.[2]

Ricardo, other classical economists, and Marx began their expositions with the assumption that value in exchange was equal to or proportional to this labor value. They thought this was a good assumption from which to explore the dynamics of development in capitalist societies.

Other supporters of the labor theory of value used the word "value" in the second sense, to represent "exchange value".[3]

Conceptual model

A simple model illustrating the concepts and workings of LTV could go as follows:

In a village in Somewhereia, everyone shares a set of skills and their produce is derived from local natural resources. Through custom or inclination each person pursues a particular trade, but is capable of pursuing any other in the village.

These people exchange their products on a regular basis. Each would know how long it took their fellow to produce their good, and how long it would take them to make it themselves. They would also know how much of their own product they would produce in the same amount of time and how much they would be able to exchange for that product.

If anyone tried to overcharge for a good, people would stop buying and make it themselves (or a competitor could enter the market and undercut them). Each person would thus be able to calculate whether it would be better for them to buy a good or make it themselves.

In this scenario prices and values would be equal.[note 1]

LTV and the labor process

Since the term value is understood in the LTV as denoting something created by labor, and its "magnitude" as something proportional to the quantity of labor performed, it is important to explain how the labor process both preserves value and adds new value in the commodities it creates.[note 2]

The value of a commodity increases in proportion to the duration and intensity of labor performed on average for its production. Part of what the LTV means by "socially necessary" is that the value only increases in proportion to this labor as it is performed with average skill and average productivity. So though workers may labor with greater skill or more productivity than others, these more skillful and more productive workers thus produce more value through the production of greater quantities of the finished commodity. Each unit still bears the same value as all the others of the same class of commodity. By working sloppily, unskilled workers may drag down the average skill of labor, thus increasing the average labor time necessary for the production of each unit commodity. But these unskillful workers cannot hope to sell the result of their labor process at a higher price (as opposed to value) simply because they have spent more time than other workers producing the same kind of commodities.

However, production not only involves labor, but also certain means of labor: tools, materials, power plants and so on. These means of labor — also known as means of production — are often the product of another labor process as well. So the labor process inevitably involves these means of production that already enter the process with a certain amount of value. Labor also requires other means of production that are not produced with labor and therefore bear no value: such as sunlight, air, uncultivated land, un-extracted minerals, etc. While useful, even crucial to the production process, these bring no value to that process. In terms of means of production resulting from another labor process, LTV treats the magnitude of value of these produced means of production as constant throughout the labor process. Due to the constancy of their value, these means of production are referred to, in this light, as constant capital.

Consider for example workers who take coffee beans, use a roaster to roast them, and then use a brewer to brew and dispense a fresh cup of coffee. In performing this labor, these workers add value to the coffee beans and water that comprise the material ingredients of a cup of coffee. The worker also transfers the value of constant capital — the value of the beans; some specific depreciated value of the roaster and the brewer; and the value of the cup — to the value of the final cup of coffee. Again, on average the worker can transfer no more than the value of these means of labor previously possessed to the finished cup of coffee[note 3] So the value of coffee produced in a day equals the sum of both the value of the means of labor — this constant capital — and the value newly added by the worker in proportion to the duration and intensity of their work.

Often this is expressed mathematically as:

  • c is the constant capital of materials used in a period plus the depreciated portion of tools and plant used in the process. (A period is typically a day, week, year, or a single turnover: meaning the time required to complete one batch of coffee, for example.)
  • L is the quantity of labor time (average skill and productivity) performed in producing the finished commodities during the period
  • W is the value of the product of the period (w comes from the German word for value: wert)

Note: if the product resulting from the labor process is homogeneous (all similar in quality and traits, for example, all cups of coffee) then the value of the period’s product can be divided by the total number of items (use-values or v_u) produced to derive the unit value of each item. \begin{matrix}w_i= \frac{W}{\sum v_u}\,\end{matrix} where \sum v_u is the total items produced.

The LTV further divides the value added during the period of production, L, into two parts. The first part is the portion of the process when the workers add value equivalent to the wages they are paid. For example, if the period in question is one week and these workers collectively are paid $1,000, then the time necessary to add $1,000 to — while preserving the value of — constant capital is considered the necessary labor portion of the period (or week): denoted NL. The remaining period is considered the surplus labor portion of the week: or SL. The value used to purchase labor-power, for example the $1,000 paid in wages to these workers for the week, is called variable capital (v). This is because in contrast to the constant capital expended on means of production, variable capital can add value in the labor process. The amount it adds depends on the duration, intensity, productivity and skill of the labor-power purchased: in this sense the buyer of labor-power has purchased a commodity of variable use. Finally, the value added during the portion of the period when surplus labor is performed is called surplus value (s). From the variables defined above, we find two other common expression for the value produced during a given period as:


The first form of the equation expresses the value resulting from production, focusing on the costs c+v and the surplus value appropriated in the process of production, s. The second form of the equation focuses on the value of production in terms of the valued added by the labor performed during the process NL+SL.

The relation between values and prices

One issue facing the LTV is the relationship between value quantities on one hand and prices on the other. If a commodity's value is not the same as its price, and therefore the magnitudes of each likely differ, then what is the relation between the two, if any? Various LTV schools of thought provide different answers to this question. For example, some argue that value in the sense of the amount of labor embodied in a good acts as a center of gravity for price. As counter-intuitive as this may seem to those accustomed to neoclassical price theory, some empirical evidence suggests labor values are a better predictor of empirically recorded prices than prediction by any other means.[4]

However, most economists would say that cases where pricing is even approximately equal to the value of the labor embodied are only special cases, and not the general case. In the standard formulation, prices also normally include a level of income for "capital" and "land". These incomes are known as "profit" and "rent" respectively. Keep in mind that—like the terms labor and value—the terms price, capital, land, profit, and rent are used here in a theoretical way that does not always correspond to everyday use, even by accountants.)

In Book 1, chapter VI, Smith explains:

The real value of all the different component parts of price, it must be observed, is measured by the quantity of labour which they can, each of them, purchase or command. Labour measures the value not only of that part of price which resolves itself into labour, but of that which resolves itself into rent, and of that which resolves itself into profit.

The final sentence shows us how Smith sees value of a product as relative to labor of buyer or consumer, as opposite to Marx who sees the value of a product being proportional to labor of laborer or producer. And we value things, price them, based on how much labor we can avoid or command, and we can command labor not only in a simple way but also by trading things for a profit.

The demonstration of the relation between commodities' unit values and their respective prices is known in Marxian terminology as the transformation problem or the transformation of values into prices of production. The transformation problem has probably generated the greatest bulk of debate about the LTV. The problem with transformation is to find an algorithm where the magnitude of value added by labor, in proportion to its duration and intensity, is sufficiently accounted for after this value is distributed through prices that reflect an equal rate of return on capital advanced. If there is an additional magnitude of value or a loss of value after transformation compared with before then the relation between values (proportional to labor) and prices (proportional to total capital advanced) is incomplete. Various solutions and impossibility theorems have been offered for the transformation, but the debate has not reached any clear resolution.

LTV does not deny the role of supply and demand influencing price since the price of a commodity is something other than its value. In Value, Price and Profit (1865), Karl Marx quotes Adam Smith and sums up:

It suffices to say that if supply and demand equilibrate each other, the market prices of commodities will correspond with their natural prices, that is to say, with their values as determined by the respective quantities of labor required for their production.[5]

The LTV seeks to explain the level of this equilibrium. This could be explained by a cost of production argument—pointing out that all costs are ultimately labor costs, but this does not account for profit, and it is vulnerable to the charge of tautology in that it explains prices by prices.[6] Marx later called this "Smith's adding up theory of value".

Smith argues that labor values are the natural measure of exchange for direct producers like hunters and fishermen.[7] Marx, on the other hand, uses a measurement analogy, arguing that for commodities to be comparable they must have a common element or substance by which to measure them,[8] and that labor is a common substance of what Marx eventually calls commodity-values.[9]

Some statistical evidence for the theory has also been advanced by Anwar Shaikh.[4]

The theory's development

Origins of the labor theory of value

The labor theory of value has developed over many centuries. It seems clear that there is no one originator of concept, but rather many different thinkers have arrived at the same conclusion independently. Some writers trace its origin to Thomas Aquinas.[10][11] In his Summa Theologiae (1265-1274) he expresses the view that "... value can, does and should increase in relation to the amount of labor which has been expended in the improvement of commodities."[12] Scholars such as Joseph Schumpeter have cited Ibn Khaldun, who in his Muqaddimah (1377), described labor as the source of value, necessary for all earnings and capital accumulation. He argued that even if earning “results from something other than a craft, the value of the resulting profit and acquired (capital) must (also) include the value of the labor by which it was obtained. Without labor, it would not have been acquired.”[13] Scholars have also pointed to Sir William Petty's Treatise of Taxes of 1662[14] and to John Locke's labor theory of property, set out in the Second Treatise on Government (1689), which sees labor as the ultimate source of economic value. Karl Marx himself credited Benjamin Franklin in his 1729 essay entitled "A Modest Enquiry into the Nature and Necessity of a Paper Currency" as being "one of the first" to advance the theory.[15]

Pioneer Scottish economist Adam Smith accepted the theory for pre-capitalist societies but saw a flaw in its application to contemporary capitalism. He pointed out that if the "labor embodied" in a product equalled the "labor commanded" (i.e. the amount of labor that could be purchased by selling it), then profit was impossible. David Ricardo (seconded by Marx) responded to this paradox by arguing that Smith had confused labor with wages. "Labor commanded", he argued, would always be more than the labor needed to sustain itself (wages). The value of labor, in this view, covered not just the value of wages (what Marx called the value of labor power), but the value of the entire product created by labor.[16]

Ricardo's theory was a predecessor of the modern theory that equilibrium prices are determined solely by neo-Ricardianism".

Based on the discrepancy between the wages of labor and the value of the product, the "Ricardian socialists" — Charles Hall, Thomas Hodgskin, John Gray, and John Francis Bray[17] — applied Ricardo's theory to develop theories of exploitation.

Marx expanded on these ideas, arguing that workers work for a part of each day adding the value required to cover their wages, while the remainder of their labor is performed for the enrichment of the capitalist. The LTV and the accompanying theory of exploitation became central to his economic thought.

19th century American individualist anarchists based their economics on the LTV, with their particular interpretation of it being called "Cost the limit of price". They, as well as contemporary individualist anarchists in that tradition, hold that it is unethical to charge a higher price for a commodity than the amount of labor required to produce it. Hence, they propose that trade should be facilitated by using notes backed by labor.

Adam Smith and David Ricardo

Adam Smith held that, in a primitive society, the amount of labor put into producing a good determined its exchange value, with exchange value meaning in this case the amount of labor a good can purchase. However, according to Smith, in a more advanced society the market price is no longer proportional to labor cost since the value of the good now includes compensation for the owner of the means of production: "The whole produce of labour does not always belong to the labourer. He must in most cases share it with the owner of the stock which employs him."[18] "Nevertheless, the 'real value' of such a commodity produced in advanced society is measured by the labor which that commodity will command in exchange....But [Smith] disowns what is naturally thought of as the genuine classical labor theory of value, that labor-cost regulates market-value. This theory was Ricardo’s, and really his alone."[19]

Classical economist David Ricardo's labor theory of value holds that the value of a good (how much of another good or service it exchanges for in the market) is proportional to how much labor was required to produce it, including the labor required to produce the raw materials and machinery used in the process. David Ricardo stated it as, "The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labour which is necessary for its production, and not as the greater or less compensation which is paid for that labour." (Ricardo 1817) In this heading Ricardo seeks to differentiate the quantity of labor necessary to produce a commodity from the wages paid to the laborers for its production. However, Ricardo was troubled with some deviations in prices from proportionality with the labor required to produce them. For example, he said "I cannot get over the difficulty of the wine, which is kept in the cellar for three or four years [i.e., while constantly increasing in exchange value], or that of the oak tree, which perhaps originally had not 2 s. expended on it in the way of labour, and yet comes to be worth £100."(Quoted in Whitaker) Of course, a capitalist economy stabilizes this discrepancy until the value added to aged wine is equal to the cost of storage. If anyone can hold onto a bottle for four years and become rich, that would make it hard to find freshly corked wine. There is also the theory that adding to the price of a luxury product increases its exchange-value by mere prestige.

The labor theory as an explanation for value contrasts with the subjective theory of value, which says that value of a good is not determined by how much labor was put into it but by its usefulness in satisfying a want and its scarcity. Ricardo's labor theory of value is not a normative theory, as are some later forms of the labor theory, such as claims that it is immoral for an individual to be paid less for his labor than the total revenue that comes from the sales of all the goods he produces.

It is arguable to what extent these classical theorists held the labor theory of value as it is commonly defined.[20][21][22][23] For instance, David Ricardo theorized that prices are determined by the amount of labor but found exceptions for which the labor theory could not account. In a letter, he wrote: "I am not satisfied with the explanation I have given of the principles which regulate value." Adam Smith theorized that the labor theory of value holds true only in the "early and rude state of society" but not in a modern economy where owners of capital are compensated by profit. As a result, "Smith ends up making little use of a labor theory of value."[24]


Pierre Joseph Proudhon's mutualism[25] and American individualist anarchists such as Josiah Warren, Lysander Spooner and Benjamin Tucker[26] adopted the liberal Labor Theory of Value of classical economics but used it to criticize capitalism instead favoring a non-capitalist market system.[27]

Josiah Warren is widely regarded as the first American anarchist,[28][29] and the four-page weekly paper he edited during 1833, The Peaceful Revolutionist, was the first anarchist periodical published,[30]Cost the limit of price was a maxim coined by Josiah Warren, indicating a (prescriptive) version of the labor theory of value. Warren maintained that the just compensation for labor (or for its product) could only be an equivalent amount of labor (or a product embodying an equivalent amount).[31] Thus, profit, rent, and interest were considered unjust economic arrangements[32] In keeping with the tradition of Adam Smith's The Wealth of Nations,[33] the "cost" of labor is considered to be the subjective cost; i.e., the amount of suffering involved in it.[31] He put his theories to the test by establishing an experimental "labor for labor store" called the Cincinnati Time Store at the corner of 5th and Elm Streets in what is now downtown Cincinnati, where trade was facilitated by notes backed by a promise to perform labor. "All the goods offered for sale in Warren's store were offered at the same price the merchant himself had paid for them, plus a small surcharge, in the neighborhood of 4 to 7 percent, to cover store overhead."[29] The store proved successful and operated for three years after which it was closed so that Warren could pursue establishing colonies based on mutualism. These included "Utopia" and "Modern Times." Warren said that Stephen Pearl Andrews' The Science of Society, published in 1852, was the most lucid and complete exposition of Warren's own theories.[34]

Mutualism is an economic theory and anarchist school of thought that advocates a society where each person might possess a means of production, either individually or collectively, with trade representing equivalent amounts of labor in the free market.[35] Integral to the scheme was the establishment of a mutual-credit bank that would lend to producers at a minimal interest rate, just high enough to cover administration.[36] Mutualism is based on a labor theory of value that holds that when labor or its product is sold, in exchange, it ought to receive goods or services embodying "the amount of labor necessary to produce an article of exactly similar and equal utility".[37] Mutualism originated from the writings of philosopher Pierre-Joseph Proudhon.

Collectivist anarchism as defended by Mikhail Bakunin defended a form of labor theory of value when it advocated a system where "all necessaries for production are owned in common by the labour groups and the free communes...based on the distribution of goods according to the labour contributed".[38]

Karl Marx

Contrary to popular belief,[39] Marx does not base his LTV on what he dismisses as "ascribing a supernatural creative power to labor", arguing in the Critique of the Gotha Program that:

Labor is not the source of all wealth. Nature is just as much a source of use values (and it is surely of such that material wealth consists!) as labor, which is itself only the manifestation of a force of nature, human labor power.[40]

Here Marx distinguishes between exchange value (the subject of the LTV) and use value.

Marx uses the concept of "socially necessary abstract labor-time" to introduce a social perspective distinct from his predecessors and neoclassical economics. Whereas most economists start with the individual's perspective, Marx starts with the perspective of society as a whole. "Social production" involves a complicated and interconnected division of labor of a wide variety of people who depend on each other for their survival and prosperity. Template:Marxian economics "Abstract" labor refers to a characteristic of commodity-producing labor that is shared by all different kinds of heterogeneous (concrete) types of labor. That is, the concept abstracts from the particular characteristics of all of the labor and is akin to average labor.

"Socially necessary" labor refers to the quantity required to produce a commodity "in a given state of society, under certain social average conditions or production, with a given social average intensity, and average skill of the labour employed."[41] That is, the value of a product is determined more by societal standards than by individual conditions. This explains why technological breakthroughs lower the price of commodities and put less advanced producers out of business. Finally, it is not labor per se, which creates value, but labor power sold by free wage workers to capitalists. Another distinction to be made is that between productive and unproductive labor. Only wage workers of productive sectors of the economy produce value.[note 4]


"The worker becomes all the poorer the more wealth he produces, the more his production increases in power and range. The worker becomes an ever cheaper commodity the more commodities he creates. With the increasing value of the world of things proceeds in direct proportion to the devaluation of the world of men. Labor produces not only commodities; it produces itself and the worker as a commodity -- and does so in the proportion in which it produces commodities generally."
Karl Marx, Economic and Philosophic Manuscripts, 1844 [42]

Marx uses his LTV to derive his theory of exploitation under capitalism.

Unlike Ricardo or the Ricardian socialists, Marx distinguishes between labor power and labor. "Labor-power" is the potential or ability of workers to work, given their muscles, brains, skills, and capacities. It is the promise of creating value possessed by human labor that has not yet been expended. "Labor" is the actual activity of producing value. The profit or surplus-value arises when workers do more labor than is necessary to pay the cost of hiring their labor-power.

To explain the normality of exploitation, Marx describes capitalism as having an institutional framework in which a small minority (the capitalists) oligopolize the means of production. The workers cannot survive except by working for capitalists, and the state preserves this inequality of power. In normal role of force is structural, part of the usual workings of the system. The reserve army of unemployed workers continually threatens employed workers, pushing them to work hard to produce for the capitalists.


Many liberal economists believe that the Marxist labor theory of value has been "discredited".[43] The labor theory of value appears to predict that profits will be higher in labor-intensive industries than in capital-intensive industries, and empirical data contradicts this. This is sometimes referred to as the "Great Contradiction." In volume 3 of Capital, Marx attempts to explain why profits are not distributed according to which industries are the most labor-intensive and why this is consistent with his theory. Whether or not this is consistent with the labor theory of value as presented in volume 1 has been a topic of debate.[44] According to Marx, surplus value is extracted by the capitalist class as a whole and then distributed according to the amount of total capital, not the just variable component. Most economists today also contest that the value of capital is limited to the "congealed labor" that it took to build the capital when that capital can increase the productive capability of labor much more than that.[45]

Within anarchist economics anarcho-communism has criticized and rejected the labour theory of value. The difference between collectivist anarchism and anarchist communism is that under the former, a wage system is retained based on the amount of labor performed. Anarchist communism, like collectivist anarchism, also advocates for the socialization of production, but the distribution of goods as well. Instead of 'to each according to his labor', in anarcho-communism the community would supply the subsistence requirements to each member free of charge according to the maxim 'to each according to his needs'.[46] Anarcho-communists believe that subsistence, productive and distributive property should be common or social possessions while personal property should be private possessions.[47]

Nonetheless, many elements of the theory are still believed to be valid, or the theory is presented in a non-Marxist tradition.[note 5] For instance mutualist anarchist theorist Kevin Carson's Studies in Mutualist Political Economy opens with an attempt to integrate marginalist critiques into the labor theory of value.[48]

See also

Business and economics portal

Competing theories



Further reading

  • Bhaduri, Amit. 1969. "On the Significance of Recent Controversies on Capital Theory: A Marxian View." Economic Journal. 79(315) September: 532-9.
  • von Böhm-Bawerk, Eugen (Classic criticism of Marxist economic theory)
  •  —. Capital and Interest: A Critical History of Economical Theory
  • G. A. Cohen 'The Labour Theory of Value and the Concept of Exploitation', in his History Labour and Freedom
  • Duncan, Colin A. M. 1996. The Centrality of Agriculture: Between Humankind and The Rest of Nature. Mc-Gill-Queen’s University Press,Montreal. 
  • --2000 The Centrality of Agriculture: History, Ecology and Feasible Socialism. Socialist Register, pp.187-205.
  • --2004  Adam Smith’s green vision and the future of global socialism. In Albritton, R; Shannon Bell; John R. Bell; and R. Westra [Eds.] New Socialisms: Futures Beyond Globalization. New York/London, Routledge. pp.90-104.
  • Eldred, Michael (1984) ISBN 978-87-87437-40-0.
  • Ellerman, David P. (1992) Property & Contract in Economics: The Case for Economic Democracy. Blackwell. Chapters 4,5, and 13 critiques of LTV in favor of the labor theory of property.
  • Freeman, Alan: Price, value and profit - a continuous, general treatment. In: Alan Freeman, Guglielmo Carchedi (editors): Marx and non-equilibrium economics. Edward Elgar. Cheltenham, UK, Brookfield, US 1996.
  • Hagendorf, Klaus: The Labour Theory of Value. A Historical-Logical Analysis. Paris: EURODOS; 2008.
  • Hagendorf, Klaus: Labour Values and the Theory of the Firm. Part I: The Competitive Firm. Paris: EURODOS; 2009.
  • Henderson, James M.; Quandt, Richard E. 1971: Microeconomic Theory - A Mathematical Approach. Second Edition/International Student Edition. McGraw-Hill Kogakusha, Ltd.
  • Keen, Steven Use, Value, and Exchange: The Misinterpretation of Marx
  • ([Internet edition: 1999] [1887 English edition])
  •  —, Complete in Three volumes. Frederick Engels, editor, 1867-1894. Definitive Kerr Edition, in English, as re-issued 1906-1909.
    • , Volume 1 1867
    • , Volume 2 1885
    • , Volume 3 1894
  •  — (1863)
  •  —
  •  — Critique of the Gotha Program
  • Ormazabal, Kepa M (2004). Bilbo, Biscay, Spain: University of the Basque Country Working Paper.
  • Parrington Title Unavailable
  • Prychitko, David L. Marxism see section 1: "The Labor Theory of Value"
  • Rubin, I.I. Commentary on Marx's form and content of value (accessible read)
  • Shaikh, Anwar (1998). "The Empirical Strength of the Labour Theory of Value" in Conference Proceedings of Marxian Economics: A Centenary Appraisal, Riccardo Bellofiore (ed.), Macmillan, London
  • Vianello, F. [1987], “Labour theory of value”, in: Eatwell, J. and Milgate, M. and Newman, P. (eds.): The New Palgrave: A Dictionary of Economics, Macmillan e Stockton, London e New York, ISBN 978-09-35-85910-2.
  • Wolff, Jonathan (2003). in Stanford Encyclopedia of Philosophy
  • Anonymous. Utopians and Socialists: Ricardian Socialists

External links

  • The Marxists Internet Archive
  • Robert Vienneau's LTV FAQ
  • Jim Devine's alternative view of Marx's LTV
  • Cotton, Corn, Labor
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