Reese, M., & Daly, P. (2009). Great CSS: Level 1 (1st edition.). O'Reilly Media, Inc.
Cita Chicago Style (17a ed.)Reese, Mark, y Patrick Daly. Great CSS: Level 1. 1st edition. O'Reilly Media, Inc, 2009.
Cita MLA (9a ed.)Reese, Mark, y Patrick Daly. Great CSS: Level 1. 1st edition. O'Reilly Media, Inc, 2009.
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