APA (7th ed.) Citation

Galati, F., & Steinbeck, J. (1991). John Steinbeck's The grapes of wrath. Penguin Books.

Chicago Style (17th ed.) Citation

Galati, Frank, and John Steinbeck. John Steinbeck's The Grapes of Wrath. New York: Penguin Books, 1991.

MLA (9th ed.) Citation

Galati, Frank, and John Steinbeck. John Steinbeck's The Grapes of Wrath. Penguin Books, 1991.