Cita APA (7a ed.)

Smith, E., & Graham, R. D. (2009). CompTIA A+ 220-701 & 220-702 video mentor (1st edition.). Pearson Certification.

Cita Chicago Style (17a ed.)

Smith, Elizabeth, y Robin Donald Graham. CompTIA A+ 220-701 & 220-702 Video Mentor. 1st edition. [S.l.]: Pearson Certification, 2009.

Cita MLA (9a ed.)

Smith, Elizabeth, y Robin Donald Graham. CompTIA A+ 220-701 & 220-702 Video Mentor. 1st edition. Pearson Certification, 2009.