Cita APA (7a ed.)

Sagan, S. D., & Waltz, K. N. (2013). The spread of nuclear weapons: An enduring debate (3rd ed.). W.W. Norton & Co.

Cita Chicago Style (17a ed.)

Sagan, Scott Douglas, y Kenneth Neal Waltz. The Spread of Nuclear Weapons: An Enduring Debate. 3rd ed. New York: W.W. Norton & Co, 2013.

Cita MLA (9a ed.)

Sagan, Scott Douglas, y Kenneth Neal Waltz. The Spread of Nuclear Weapons: An Enduring Debate. 3rd ed. W.W. Norton & Co, 2013.