APA (7th ed.) Citation

Marx, K., & Engels, F. (1986). Karl, Marx, Frederick Engels collected works. Progress Pub.

Chicago Style (17th ed.) Citation

Marx, Karl, and Frederick Engels. Karl, Marx, Frederick Engels Collected Works. Moscow: Progress Pub, 1986.

MLA (9th ed.) Citation

Marx, Karl, and Frederick Engels. Karl, Marx, Frederick Engels Collected Works. Progress Pub, 1986.