Castro. HTML, XHTML, and CSS, Sixth Edition: Visual QuickStart Guide (6.). Pearson India.
Cita Chicago Style (17a ed.)Castro. HTML, XHTML, and CSS, Sixth Edition: Visual QuickStart Guide. 6. Pearson India.
Cita MLA (8a ed.)Castro. HTML, XHTML, and CSS, Sixth Edition: Visual QuickStart Guide. 6. Pearson India.
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