APA (7th ed.) Citation

Moore, A., & Gibbons, D. (2007). Watchmen. Planeta-De Agostini.

Chicago Style (17th ed.) Citation

Moore, Alan, and Dave Gibbons. Watchmen. Barcelona: Planeta-De Agostini, 2007.

MLA (9th ed.) Citation

Moore, Alan, and Dave Gibbons. Watchmen. Planeta-De Agostini, 2007.

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