APA (7th ed.) Citation

Steinbeck, J. (2014). The grapes of wrath. Penguin Books.

Chicago Style (17th ed.) Citation

Steinbeck, John. The Grapes of Wrath. London: Penguin Books, 2014.

MLA (9th ed.) Citation

Steinbeck, John. The Grapes of Wrath. Penguin Books, 2014.

Warning: These citations may not always be 100% accurate.