Cisco Networking Academy Program. (2003). Cisco Networking Academy Program: It essentials II, Network operating companion guide (First edition.). Editorial Cisco Press.
Lua i Stíl Chicago (17ú heag.)Cisco Networking Academy Program. Cisco Networking Academy Program: It Essentials II, Network Operating Companion Guide. First edition. Indianápolis: Editorial Cisco Press, 2003.
Lua MLA (8ú heag.)Cisco Networking Academy Program. Cisco Networking Academy Program: It Essentials II, Network Operating Companion Guide. First edition. Editorial Cisco Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.