John Kane. (2003). Cissco Networking Academy Program - CCNA 1 and 2 Engineering Journal and Workbook (photo) (Tái bản lần thứ 3.). U.S.A: Cisco Press.
Dyfyniad Arddull ChicagoJohn Kane. Cissco Networking Academy Program - CCNA 1 and 2 Engineering Journal and Workbook (photo). Tái bản lần thứ 3. U.S.A: Cisco Press, 2003.
Dyfyniad MLAJohn Kane. Cissco Networking Academy Program - CCNA 1 and 2 Engineering Journal and Workbook (photo). Tái bản lần thứ 3. U.S.A: Cisco Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.