APA Style

Goertz, G., Levy, J, S. (2007). Explaining War and Peace: Case Studies and Necessary Condition Counterfactuals . New York: Routledge.

MLA Style

Goertz, Gary., Levy, Jack, S.. "Explaining War and Peace: Case Studies and Necessary Condition Counterfactuals". New York: Routledge, 2007. Books.