APA (7th ed.) Citation

Marx, K., & Kamenka, E. (1983). The portable Karl Marx. Penguin Books.

Chicago Style (17th ed.) Citation

Marx, Karl, and Eugene Kamenka. The Portable Karl Marx. New York: Penguin Books, 1983.

MLA (9th ed.) Citation

Marx, Karl, and Eugene Kamenka. The Portable Karl Marx. Penguin Books, 1983.