Cisco Networking Academy Program. (2001). Cisco Networking Academy Program: Second-year companion guide (Second edition.). Editorial Cisco Press.
Chicago-referens (17:e uppl.)Cisco Networking Academy Program. Cisco Networking Academy Program: Second-year Companion Guide. Second edition. Indianápolis: Editorial Cisco Press, 2001.
MLA-referens (8:e uppl.)Cisco Networking Academy Program. Cisco Networking Academy Program: Second-year Companion Guide. Second edition. Editorial Cisco Press, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.