APA (7th ed.) Citation

Kirkman, R., Adlard, C., & Rathburn, C. (2006). The walking dead. Image Comics.

Chicago Style (17th ed.) Citation

Kirkman, Robert, Charles Adlard, and Cliff Rathburn. The Walking Dead. Berkley, Calif.: Image Comics, 2006.

MLA (9th ed.) Citation

Kirkman, Robert, et al. The Walking Dead. Image Comics, 2006.