Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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