APA (7th ed.) Citation

Moore, A., Gibbons, D., & Higgins, J. (2014). Watchmen. DC Comics.

Chicago Style (17th ed.) Citation

Moore, Alan, Dave Gibbons, and John Higgins. Watchmen. New York: DC Comics, 2014.

MLA (9th ed.) Citation

Moore, Alan, et al. Watchmen. DC Comics, 2014.