Gaya APA

Allison, G., Zelikow, P. (1999). Essence of Decision : Explaining the Cuban Missile Crisis . Newyork: Addison-Wesley Educational Publishers.

Gaya MLA

Allison, Graham., Zelikow, Philip. "Essence of Decision : Explaining the Cuban Missile Crisis". Newyork: Addison-Wesley Educational Publishers, 1999. Text.