APA (7th ed.) Citation

Gratz, A., & Helquist, B. (2017). The monster war (First trade paperback edition.). Starscape.

Chicago Style (17th ed.) Citation

Gratz, Alan, and Brett Helquist. The Monster War. First trade paperback edition. New York: Starscape, 2017.

MLA (8th ed.) Citation

Gratz, Alan, and Brett Helquist. The Monster War. First trade paperback edition. Starscape, 2017.

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