APA (7th ed.) Citation

Christopher, A. (2018). I only killed him once (First edition.). Tom Doherty Associates.

Chicago Style (17th ed.) Citation

Christopher, Adam. I Only Killed Him Once. First edition. New York: Tom Doherty Associates, 2018.

MLA (9th ed.) Citation

Christopher, Adam. I Only Killed Him Once. First edition. Tom Doherty Associates, 2018.