Cita APA (7a ed.)

Kaza, R., & Asadullah, S. (2005). Cisco IP telephony: Planning, design, implementation, operation, and optimization. Cisco.

Cita Chicago Style (17a ed.)

Kaza, Ramesh, y Salman Asadullah. Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization. Indianapolis, IN: Cisco, 2005.

Cita MLA (8a ed.)

Kaza, Ramesh, y Salman Asadullah. Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization. Cisco, 2005.