CSS : the definitive guide : visual presentation for the web.

MLA

Meyer, Eric A., and Estelle Weyl. Css : the Definitive Guide : Visual Presentation for the Web. Fourth edition / Beijing: O'Reilly, 2017.

APA

Meyer, E. A., & Weyl, E. (2017). CSS : the definitive guide : visual presentation for the web. Fourth edition / Beijing: O'Reilly.

Chicago

Meyer, Eric A., and Estelle Weyl. CSS: The Definitive Guide : Visual Presentation for the Web.. Fourth edition / Beijing: O'Reilly, 2017.