Harris, O. (2015). CCNA Security 210-260 (1st edition.). Pearson IT Certification.
Cita Chicago Style (17a ed.)Harris, Omar. CCNA Security 210-260. 1st edition. Pearson IT Certification, 2015.
Cita MLA (9a ed.)Harris, Omar. CCNA Security 210-260. 1st edition. Pearson IT Certification, 2015.
Precaución: Estas citas no son 100% exactas.
