(2003). Cisco Networking Academy Program: CCNA 3 and 4 companion guide. Indianapolis, Ind: Cisco Press.
Čikaški stil citiranjaCisco Networking Academy Program: CCNA 3 and 4 Companion Guide. Indianapolis, Ind: Cisco Press, 2003.
MLA način citiranjaCisco Networking Academy Program: CCNA 3 and 4 Companion Guide. Indianapolis, Ind: Cisco Press, 2003.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.