Gaya APA

R.Cheswiek, W., Bellovin, S, M. (1994). Firewalls and internet securing repelling the wily hacker . New York: Addison Wesley Pub.

Gaya MLA

R.Cheswiek, William., Bellovin, Steven, M.. "Firewalls and internet securing repelling the wily hacker". New York: Addison Wesley Pub, 1994. Text.