Cita APA (7a ed.)

Collins, D. (2003). Carrier grade voice over IP (2o ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Collins, D. Carrier Grade Voice over IP. 2o ed. New York: McGraw-Hill, 2003.

Cita MLA (9a ed.)

Collins, D. Carrier Grade Voice over IP. 2o ed. McGraw-Hill, 2003.