APA (7th ed.) Citation

Isayama, H., & Title. (2016). Attack on Titan: Vol. 18. Kondansha Comics.

Chicago Style (17th ed.) Citation

Isayama, Hajime, and Title. Attack on Titan: Vol. 18. New York: Kondansha Comics, 2016.

MLA (9th ed.) Citation

Isayama, Hajime, and Title. Attack on Titan: Vol. 18. Kondansha Comics, 2016.

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