APA (7th ed.) Citation

Grossman. (2009). On killing: The psychological cost of learning to kill in war and society (Rev. ed.). Back Bay Books.

Chicago Style (17th ed.) Citation

Grossman. On Killing: The Psychological Cost of Learning to Kill in War and Society. Rev. ed. New York: Back Bay Books, 2009.

MLA (8th ed.) Citation

Grossman. On Killing: The Psychological Cost of Learning to Kill in War and Society. Rev. ed. Back Bay Books, 2009.