Cita APA (7th ed.)

Steinbeck, J. (1975). The grapes of wrath. Pan Books.

Cita Chicago (17th ed.)

Steinbeck, John. The Grapes of Wrath. Londres: Pan Books, 1975.

Cita MLA (9th ed.)

Steinbeck, John. The Grapes of Wrath. Pan Books, 1975.