Marx, K., & Lenin, W. I. (1940). Briefe an Kugelmann.
Chicago Style (17th ed.) CitationMarx, Karl, and W. I. Lenin. Briefe an Kugelmann. 1940.
MLA (8th ed.) CitationMarx, Karl, and W. I. Lenin. Briefe an Kugelmann. 1940.
Warning: These citations may not always be 100% accurate.