APA (7th ed.) Citation

Paul, G. S. (2007). The battle at the moons of hell (Helfort's war, book 1.). Ballantine Books.

Chicago Style (17th ed.) Citation

Paul, Graham Sharp. The Battle at the Moons of Hell. Helfort's war, book 1. New York: Ballantine Books, 2007.

MLA (9th ed.) Citation

Paul, Graham Sharp. The Battle at the Moons of Hell. Helfort's war, book 1. Ballantine Books, 2007.