Cita APA (7a ed.)

Steinbeck, J. (1981). The Grapes of Wrath. Penguin.

Cita Chicago Style (17a ed.)

Steinbeck, John. The Grapes of Wrath. Harmondsworth: Penguin, 1981.

Cita MLA (9a ed.)

Steinbeck, John. The Grapes of Wrath. Penguin, 1981.