Cita APA (7a ed.)

Marx, K., & Engels, F. (1968). Selected works [of] Karl Marx and Frederick Engels. Progress.

Cita Chicago Style (17a ed.)

Marx, Karl, y Friedrich Engels. Selected Works [of] Karl Marx and Frederick Engels. Moscow: Progress, 1968.

Cita MLA (9a ed.)

Marx, Karl, y Friedrich Engels. Selected Works [of] Karl Marx and Frederick Engels. Progress, 1968.