Citazione APA

Collins, D. (2005). Carrier grade voice over IP (2nd ed.). Tata McGraw-Hill.

Stile di citazione Chicago

Collins, Daniel. Carrier Grade Voice over IP. 2nd ed. New Delhi: Tata McGraw-Hill, 2005.

Citazione MLA

Collins, Daniel. Carrier Grade Voice over IP. 2nd ed. Tata McGraw-Hill, 2005.