Cita APA (7a ed.)

Davidson, J., Peters, J. F., & Gracely, B. (1999). Voice over IP fundamentals. Cisco Systems-Cisco Press.

Cita Chicago Style (17a ed.)

Davidson, Jonathan, James F. Peters, y Brian Gracely. Voice over IP Fundamentals. Indianapolis, Indiana: Cisco Systems-Cisco Press, 1999.

Cita MLA (9a ed.)

Davidson, Jonathan, et al. Voice over IP Fundamentals. Cisco Systems-Cisco Press, 1999.