APA (7th ed.) Citation

Steinbeck, J. (1939). The grapes of wrath. The Viking Press.

Chicago Style (17th ed.) Citation

Steinbeck, John. The Grapes of Wrath. Nueva York: The Viking Press, 1939.

MLA (9th ed.) Citation

Steinbeck, John. The Grapes of Wrath. The Viking Press, 1939.