Marx, K. (1969). Theories of surplus value. Lawrence & Wishart, Progress Publishers.
Cita Chicago (17th ed.)Marx, Karl. Theories of Surplus Value. London, Moscow: Lawrence & Wishart, Progress Publishers, 1969.
Cita MLA (8th ed.)Marx, Karl. Theories of Surplus Value. Lawrence & Wishart, Progress Publishers, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.