NIEDERST ROBBINS, Jennifer. HTML5 Pocket Reference Quick, Comprehensive, Indispensable (Pocket Reference (O'Reilly)). 5ta. Ed. Págs. 1 a 4, 6 y 7. EE.UU.: O'Reilly Media, 2013. ISBN: 978-1449363352
NIEDERST ROBBINS, Jennifer. HTML5 Pocket Reference Quick, Comprehensive, Indispensable (Pocket Reference (O'Reilly)). 5ta. Ed. Págs. 1 a 4, 6 y 7. EE.UU.: O'Reilly Media, 2013. ISBN: 978-1449363352