Cita APA (7a ed.)

Steinbeck, J. (1942). The moon is down: A novel. Viking.

Cita Chicago Style (17a ed.)

Steinbeck, John. The Moon Is Down: A Novel. New York: Viking, 1942.

Cita MLA (9a ed.)

Steinbeck, John. The Moon Is Down: A Novel. Viking, 1942.