Cisco Networking Academy Program. (2003). Cisco Networking Academy Program: It essentials II, Network operating companion guide (First edition.). Editorial Cisco Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCisco Networking Academy Program. Cisco Networking Academy Program: It Essentials II, Network Operating Companion Guide. First edition. Indianápolis: Editorial Cisco Press, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCisco Networking Academy Program. Cisco Networking Academy Program: It Essentials II, Network Operating Companion Guide. First edition. Editorial Cisco Press, 2003.
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