Cita APA (7a ed.)

Card, O. S. (1996). Earthfall. A Tom Doherty Associates Book.

Cita Chicago Style (17a ed.)

Card, Orson Scott. Earthfall. New York: A Tom Doherty Associates Book, 1996.

Cita MLA (9a ed.)

Card, Orson Scott. Earthfall. A Tom Doherty Associates Book, 1996.