APA-Zitierstil (7. Ausg.)

Steinbeck, J. (2007). Once there was a war. Penguin Books.

Chicago-Zitierstil (17. Ausg.)

Steinbeck, John. Once There Was a War. New York: Penguin Books, 2007.

MLA-Zitierstil (9. Ausg.)

Steinbeck, John. Once There Was a War. Penguin Books, 2007.