Cita APA (7a ed.)

Niven, L. (1982). Protector (11. print.). Ballantine Books.

Cita Chicago Style (17a ed.)

Niven, Larry. Protector. 11. print. New York: Ballantine Books, 1982.

Cita MLA (9a ed.)

Niven, Larry. Protector. 11. print. Ballantine Books, 1982.