APA (7th ed.) Citation

Marx, K., & Engels, F. (1969). Karl Marx and Frederick Engels: Selected works : in three volumes. Progress Publishers.

Chicago Style (17th ed.) Citation

Marx, Karl, and Friedrich Engels. Karl Marx and Frederick Engels: Selected Works : In Three Volumes. Moscow: Progress Publishers, 1969.

MLA (9th ed.) Citation

Marx, Karl, and Friedrich Engels. Karl Marx and Frederick Engels: Selected Works : In Three Volumes. Progress Publishers, 1969.