APA (7th ed.) Citation

Isayama, H., Gun Snark, & Applegate, B. (2014). Attack on Titan: No regrets. Kodansha Comics, an imprint of Kodansha USA Publishing, LLC.

Chicago Style (17th ed.) Citation

Isayama, Hajime, Gun Snark, and Ben Applegate. Attack on Titan: No Regrets. New York: Kodansha Comics, an imprint of Kodansha USA Publishing, LLC, 2014.

MLA (8th ed.) Citation

Isayama, Hajime, et al. Attack on Titan: No Regrets. Kodansha Comics, an imprint of Kodansha USA Publishing, LLC, 2014.

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