Cioara, J. (2007). Authorized self-study guide: Cisco IP telephony (CIPT) (Second edition.). Cisco Press.
Chicago Style aipamenaCioara, Jeremy. Authorized Self-study Guide: Cisco IP Telephony (CIPT). Second edition. Indiana: Cisco Press, 2007.
MLA aipamenaCioara, Jeremy. Authorized Self-study Guide: Cisco IP Telephony (CIPT). Second edition. Cisco Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.