Cita APA

Steinbeck, J. 1., & Steinbeck, J. 1. (1958). Once there was a war. New York, New York: Viking Press.

Citación estilo Chicago

Steinbeck, John 1902-1968, y John 1902-1968 Steinbeck. Once There Was a War. New York, New York: Viking Press, 1958.

Cita MLA

Steinbeck, John 1902-1968, y John 1902-1968 Steinbeck. Once There Was a War. New York, New York: Viking Press, 1958.