APA (7th ed.) Citation

Kirkman, R. (2015). Invincible (2003), volume 11: Happy days (Collected.). Image Comics.

Chicago Style (17th ed.) Citation

Kirkman, Robert. Invincible (2003), Volume 11: Happy Days. Collected. Cleveland: Image Comics, 2015.

MLA (8th ed.) Citation

Kirkman, Robert. Invincible (2003), Volume 11: Happy Days. Collected. Image Comics, 2015.

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