APA (7th ed.) Citation

Preston, D. (2015). A higher form of killing: Six weeks in World War I that forever changed the nature of warfare forever. Bloomsbury Press.

Chicago Style (17th ed.) Citation

Preston, Diana. A Higher Form of Killing: Six Weeks in World War I That Forever Changed the Nature of Warfare Forever. New York: Bloomsbury Press, 2015.

MLA (9th ed.) Citation

Preston, Diana. A Higher Form of Killing: Six Weeks in World War I That Forever Changed the Nature of Warfare Forever. Bloomsbury Press, 2015.