APA (7th ed.) Citation

Marx, H. (1961). Harpo speaks! (2. print.). Geis.

Chicago Style (17th ed.) Citation

Marx, Harpo. Harpo Speaks! 2. print. New York, NY: Geis, 1961.

MLA (9th ed.) Citation

Marx, Harpo. Harpo Speaks! 2. print. Geis, 1961.

Warning: These citations may not always be 100% accurate.