Marx, K., & Engels, F. (2001). The process of circulation of capital: A critique of political economy. Electric Book Co..
Lua i Stíl Chicago (17ú heag.)Marx, Karl, agus Friedrich Engels. The Process of Circulation of Capital: A Critique of Political Economy. London: Electric Book Co., 2001.
Lua MLA (9ú heag.)Marx, Karl, agus Friedrich Engels. The Process of Circulation of Capital: A Critique of Political Economy. Electric Book Co., 2001.
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