APA

Steinbeck J., Demott R. & Wiggins M. (1992). The grapes of Wrath. New York: Penguin Books.

Chicago

Steinbeck John, Demott Robert and Wiggins Mick. 1992. The grapes of Wrath. New York: Penguin Books.

Harvard

Steinbeck J., Demott R. and Wiggins M. (1992). The grapes of Wrath. New York: Penguin Books.

MLA

Steinbeck John, Demott Robert and Wiggins Mick. The grapes of Wrath. New York: Penguin Books. 1992.