Miller, M. (2016). SEO Essentials (1st edition.). Que.
Cita Chicago Style (17a ed.)Miller, Michael. SEO Essentials. 1st edition. Que, 2016.
Cita MLA (9a ed.)Miller, Michael. SEO Essentials. 1st edition. Que, 2016.
Precaución: Estas citas no son 100% exactas.
