Cita APA (7a ed.)

Steinbeck, J. (1968). The Grapes of wrath. Viking.

Cita Chicago Style (17a ed.)

Steinbeck, John. The Grapes of Wrath. New York: Viking, 1968.

Cita MLA (9a ed.)

Steinbeck, John. The Grapes of Wrath. Viking, 1968.