Cita APA (7a ed.)

Sequeira, A. (2012). CCNA Security 640-554 quick reference (2nd edition.). Cisco Press.

Cita Chicago Style (17a ed.)

Sequeira, Anthony. CCNA Security 640-554 Quick Reference. 2nd edition. Indianapolis, Indiana: Cisco Press, 2012.

Cita MLA (9a ed.)

Sequeira, Anthony. CCNA Security 640-554 Quick Reference. 2nd edition. Cisco Press, 2012.