APA (7th ed.) Citation

Gaiman, N., & Helquist, B. (2009). Odd and the Frost Giants. Harper.

Chicago Style (17th ed.) Citation

Gaiman, Neil, and Brett Helquist. Odd and the Frost Giants. New York: Harper, 2009.

MLA (9th ed.) Citation

Gaiman, Neil, and Brett Helquist. Odd and the Frost Giants. Harper, 2009.