Marx, K., Lenin, V. I., & Kugelmann, F. (1968). Lettres à Kugelmann (1862-1874). Paris: Anthropos.
Chicago Style (17th ed.) CitationMarx, Karl, Vladimir Iljitsj Lenin, and Franzisca Kugelmann. Lettres à Kugelmann (1862-1874). Paris: Anthropos, 1968.
MLA (8th ed.) CitationMarx, Karl, et al. Lettres à Kugelmann (1862-1874). Paris: Anthropos, 1968.
Warning: These citations may not always be 100% accurate.