Cita APA (7a ed.)

Cisco Systems & Cisco Networking Academy Program. (2003). Cisco Networking Academy Program: CCNA 3 and 4 companion guide (3rd ed.). Cisco Press.

Cita Chicago Style (17a ed.)

Cisco Systems y Cisco Networking Academy Program. Cisco Networking Academy Program: CCNA 3 and 4 Companion Guide. 3rd ed. Indianapolis, Indiana: Cisco Press, 2003.

Cita MLA (9a ed.)

Cisco Systems y Cisco Networking Academy Program. Cisco Networking Academy Program: CCNA 3 and 4 Companion Guide. 3rd ed. Cisco Press, 2003.