APA (7th ed.) Citation

Walker, A., & Vitale, S. (2007). Why war is never a good idea. HarperCollinsPublishers.

Chicago Style (17th ed.) Citation

Walker, Alice, and Stefano Vitale. Why War Is Never a Good Idea. New York: HarperCollinsPublishers, 2007.

MLA (8th ed.) Citation

Walker, Alice, and Stefano Vitale. Why War Is Never a Good Idea. HarperCollinsPublishers, 2007.

Warning: These citations may not always be 100% accurate.