Bates, K. (2012). Search Engine Optimization (1st edition.). Infinite Skills.
Cita Chicago Style (17a ed.)Bates, Kevin. Search Engine Optimization. 1st edition. Infinite Skills, 2012.
Cita MLA (9a ed.)Bates, Kevin. Search Engine Optimization. 1st edition. Infinite Skills, 2012.
Precaución: Estas citas no son 100% exactas.
