APA (7th ed.) Citation

Kanfer, S. (2000). Groucho: The life and times of Julius Henry Marx. Knopf.

Chicago Style (17th ed.) Citation

Kanfer, Stefan. Groucho: The Life and Times of Julius Henry Marx. New York: Knopf, 2000.

MLA (9th ed.) Citation

Kanfer, Stefan. Groucho: The Life and Times of Julius Henry Marx. Knopf, 2000.

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