Cita APA

Crichton, J. M. 1. (1987). Sphere: A novel. New York: Ballantine.

Citación estilo Chicago

Crichton, John Michael 1942-2008. Sphere: A Novel. New York: Ballantine, 1987.

Cita MLA

Crichton, John Michael 1942-2008. Sphere: A Novel. New York: Ballantine, 1987.