APA ציטוט

Ziegler, R. (1999). Linux firewalls. Indianapolis, Ind.: New Riders ; Prentice Hall.

Trích dẫn kiểu Chicago

Ziegler, Robert. Linux Firewalls. Indianapolis, Ind.: New Riders ; Prentice Hall, 1999.

ציטוט MLA

Ziegler, Robert. Linux Firewalls. Indianapolis, Ind.: New Riders ; Prentice Hall, 1999.