APA (7th ed.) Citation

Robson, E., Freeman, E., & Hendrickson, M. (2012). Head first HTML and CSS (Second edition.). O'Reilly.

Chicago Style (17th ed.) Citation

Robson, Elisabeth, Eric Freeman, and Mike Hendrickson. Head First HTML and CSS. Second edition. Sebastopol, California: O'Reilly, 2012.

MLA (9th ed.) Citation

Robson, Elisabeth, et al. Head First HTML and CSS. Second edition. O'Reilly, 2012.