APA Style

Comer, D. (2007). The Internet book : everything you need to know about computer networking and how the internet works. Fourth Edition (Fourth Edition). Upper Saddle River: Pearson Prentice hall.

MLA Style

Comer, Douglas. "The Internet book : everything you need to know about computer networking and how the internet works. Fourth Edition". Fourth Edition Upper Saddle River: Pearson Prentice hall, 2007. Text.