APA Style
Durkin., J, F. (2003).
Voice enabling the data network : H.323, MGCP, SIP, QoS, SLAs, and security .
Indianapolis,USA:
Cisco Press.
MLA Style
Durkin., James, F..
"Voice enabling the data network : H.323, MGCP, SIP, QoS, SLAs, and security".
Indianapolis,USA:
Cisco Press,
2003.
Text.