Cita APA (7a ed.)

Walter, A., Walter, A., Sweeney, M., & Geoffroy, E. (2009). SEO and beyond: A holistic approach to findability (1st edition.). New Riders.

Cita Chicago Style (17a ed.)

Walter, Aarron, Aarron Walter, Mary Sweeney, y Eric Geoffroy. SEO and Beyond: A Holistic Approach to Findability. 1st edition. [United States?]: New Riders, 2009.

Cita MLA (9a ed.)

Walter, Aarron, et al. SEO and Beyond: A Holistic Approach to Findability. 1st edition. New Riders, 2009.