Cita APA (7th ed.)

Marx, K. (1970). A contribution to the critique of political economy. Progress Publishers.

Cita Chicago (17th ed.)

Marx, Karl. A Contribution to the Critique of Political Economy. Moscow: Progress Publishers, 1970.

Cita MLA (9th ed.)

Marx, Karl. A Contribution to the Critique of Political Economy. Progress Publishers, 1970.