Livres en anglais :

Adamson, Joe. Groucho, Harpo, Chico, and Sometimes Zeppo : A Celebration of the Marx Brothers. New York : Simon and Schuster, 1973.
Allen, Miriam Marx, ed. Love, Groucho : Letters from Groucho Marx to His Daughter Miriam. Boston : Faber and Faber, 1993.
Anobile, Richard. Hurray for Captain Spaulding. New York:Darien House Inc., 1974.
Anobile, Richard J., ed. Why a Duck?. New York : Simon and Schuster, 1973.
Arce, Hector. Groucho. New York : G.P. Putnam's Sons, 1979.
Bader, Robert S., ed. Groucho Marx and Other Short Stories and Tall Tales : Selected Writings of Groucho Marx. Boston: Faber and Faber, 1993.
Barson, Michael, ed. Flywheel, Shyster, and Flywheel : The Marx Brothers Lost Radio Show. New York: Pantheon Books, 1988.
Bergan, Ronald. The Life and Times of the Marx Brothers. London : Green Wood Publishing, 1992.
Chandler, Charlotte. Hello, I Must Be Going: Groucho and His Friends. Middlesex : Penguin Books, 1979.
Crichton, Kyle. The Marx Brothers. Garden City, New York : Doubleday, 1950.
Eyles, Allen. The Marx Brothers : Their World of Comedy. South Brunswick and New York: A. S. Barnes and Co., Inc., 1966.
Eyles, Allen. The Complete Films of the Marx Brothers. New York : Citadel Press, 1992.
Gehring, Wes D. The Marx Brothers: A Bio-Bibliography. New York : Garland Publishing, 1987.
Gehring, Wes D. Groucho and W.C. Fields : Huckster Comedians (Studies in Popular Culture). Univ Press of Mississippi, 1994.
Krasna, Norman and Groucho Marx. Time for Elizabeth. New York : Dramatists Play Service, Inc., 1949.
Marx, Arthur. Life with Groucho. New York : Simon and Schuster, 1954.
Marx, Arthur. Son of Groucho. New York : David McKay Company, Inc., 1972.
Marx, Groucho. Beds. Indianapolis : Bobbs-Merrill Company, Inc., 1976.
Marx, Groucho. Groucho and Me. New York : Bernard Geis Associates, 1959.
Marx, Groucho. The Groucho Letters: Letters From and To Groucho Marx. New York : Simon and Schuster, 1967.
Marx, Groucho. Groucho Marx & Others. Faber & Faber Inc.
Marx, Groucho. The Groucho Phile: An Illustrated Life. Indianapolis : Bobbs-Merrill Company, Inc., 1976.
Marx, Groucho. Many Happy Returns. New York : Simon and Schuster, 1942.
Marx, Groucho. Memoirs of a Mangy Lover. New York : Simon and Schuster, 1989.
Marx, Groucho and Richard J. Anobile. The Marx Brothers Scrapbook. New York : Darien House, 1973.
Marx, Groucho with Hector Arce. The Secret Word is Groucho. New York : G. P. Putnam's Sons, 1976.
Marx, Harpo and Rowland Barber. Harpo Speaks. New York: Bernard Geis Associates, 1961.
Marx, Maxine. Growing Up with Chico. Englewood Cliffs, New Jersey : Prentice-Hall, Inc., 1980.
The Marx Brothers: Monkey Business, Duck Soup, and A Day at the Races. London : Faber and Faber, 1993.
Mitchell, Glenn. The Marx Brothers Encyclopedia. B. T. Batsford Ltd, 1996.
Stables, Kate. The Marx Bros. New Jersey : Chartwell Books, Inc., 1992.
Stoliar, Steve. Raised Eyebrows : My Years Inside Groucho's House. Los Angeles : General Publishing Group, 1996.
Tiersma, Peter Meijes. Language-Based Humor in the Marx Brothers Films. Indiana Univ Linguistics Club, 1985.
Tyson, Peter. Groucho Marx (Pop Culture Legends). Chelsea House Pub., 1995.
Zimmerman, Paul D. & Burt Goldblatt. The Marx Brothers at the Movies. New York : G.P. Putnam's Sons, 1968.

Livres en français :

Keesey, Douglas. Marx Brothers. Taschen,2007.
Alion, Yves. Les Marx brothers. Pygmalion.
Benayoun, Robert. Les Marx Brothers ont la parole. Points, 1991.
Les Marx Brothers : Pensées, répliques et anecdotes. Le Cherche-Midi, 1995.
Marx, Groucho. Lettres de Groucho à sa fille Miriam. Points, 1995.
Marx, Groucho. Mémoires capitales. Points, 1985.
Marx, Groucho. Correspondance. Folio, 1990.
Marx, Groucho. Crise et grouchotements. Points, 1996.
Marx, Groucho. Mémoires d’un amant lamentable. Points, 1984.
Marx, Groucho. Plumards, de cheval. Points, 1983.
Marx, Harpo. Harpo et moi. Ramsay, 1985.