APA (7th ed.) Citation

Isayama, H., Ransom, K., & Wands, S. (2013). Attack on Titan. Kodansha Comics.

Chicago Style (17th ed.) Citation

Isayama, Hajime, Ko Ransom, and Steve Wands. Attack on Titan. New York, N.Y.: Kodansha Comics, 2013.

MLA (8th ed.) Citation

Isayama, Hajime, et al. Attack on Titan. Kodansha Comics, 2013.

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