Cita APA (7a ed.)

Auel, J. M. (1983). The valley of horses: A novel. Bantam Books.

Cita Chicago Style (17a ed.)

Auel, Jean M. The Valley of Horses: A Novel. New York [etc.]: Bantam Books, 1983.

Cita MLA (9a ed.)

Auel, Jean M. The Valley of Horses: A Novel. Bantam Books, 1983.