Παραπομπή APA

Sagan, S. D., & Waltz, K. N. (2003). The spread of nuclear weapons: A debate renewed.

Παραπομπή Chicago Style

Sagan, Scott D., και Kenneth N. Waltz. The Spread of Nuclear Weapons: A Debate Renewed. New York, Norton, 2003.

Παραπομπή MLA

Sagan, Scott D., και Kenneth N. Waltz. The Spread of Nuclear Weapons: A Debate Renewed. 2003.