Style de citation APA (7e éd.)

Marx, G. (1967). The groucho letters: Letters from and to groucho marx. Ms. Rowan.

Style de citation Chicago (17e éd.)

Marx, Groucho. The Groucho Letters: Letters from and to Groucho Marx. New York: Ms. Rowan, 1967.

Style de citation MLA (9e éd.)

Marx, Groucho. The Groucho Letters: Letters from and to Groucho Marx. Ms. Rowan, 1967.