Comer, D. E. (2001). The internet book: Everything you need to know about computer networking and how the inernet works (2nd ed.). Prentice-Hall of India Pvt. Ltd..

Comer, Douglas E. The Internet Book: Everything You Need to Know About Computer Networking and How the Inernet Works. 2nd ed. New Delhi: Prentice-Hall of India Pvt. Ltd., 2001.

Comer, Douglas E. The Internet Book: Everything You Need to Know About Computer Networking and How the Inernet Works. 2nd ed. Prentice-Hall of India Pvt. Ltd., 2001.