APA (7th ed.) Citation
Castro, E. (2007). HTML, XHTML y CSS. Anaya Multimedia.
Chicago Style (17th ed.) Citation
Castro, Elizabeth. HTML, XHTML Y CSS. Madrid: Anaya Multimedia, 2007.
MLA (9th ed.) Citation
Castro, Elizabeth. HTML, XHTML Y CSS. Anaya Multimedia, 2007.
Warning: These citations may not always be 100% accurate.