APA (7th ed.) Citation

Steinbeck, J., & Terkel, S. (1989). The grapes of wrath. Viking.

Chicago Style (17th ed.) Citation

Steinbeck, John, and Studs Terkel. The Grapes of Wrath. New York, N.Y.: Viking, 1989.

MLA (8th ed.) Citation

Steinbeck, John, and Studs Terkel. The Grapes of Wrath. Viking, 1989.