APA (7th ed.) Citation

Marx, H. (1981). Harpo speaks!: The riotous autobiography of Harpo Marx (Coronet ed., 3. impr.). Hodder and Stoughton.

Chicago Style (17th ed.) Citation

Marx, Harpo. Harpo Speaks!: The Riotous Autobiography of Harpo Marx. Coronet ed., 3. impr. London: Hodder and Stoughton, 1981.

MLA (9th ed.) Citation

Marx, Harpo. Harpo Speaks!: The Riotous Autobiography of Harpo Marx. Coronet ed., 3. impr. Hodder and Stoughton, 1981.

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