APA Style

Cheswick, W, R., Bellovin, S, M. (1994). Firewalls and Internet Security: repelling the wily hacker (--). : Addison-Wesley Publishing Company.

MLA Style

Cheswick, William, R.., Bellovin, Steven, M.. "Firewalls and Internet Security: repelling the wily hacker". -- : Addison-Wesley Publishing Company, 1994. Text.