APA (7th ed.) Citation

Carhee, S. L. (2004). The road to IP Telephony: How Cisco Systems migrated from PBX to IP Telephony. Cisco Press.

Chicago Style (17th ed.) Citation

Carhee, Stephanie L. The Road to IP Telephony: How Cisco Systems Migrated from PBX to IP Telephony. Indianapolis, Ind.: Cisco Press, 2004.

MLA (9th ed.) Citation

Carhee, Stephanie L. The Road to IP Telephony: How Cisco Systems Migrated from PBX to IP Telephony. Cisco Press, 2004.