APA引文

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.

MLA引文

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

警告：這些引文格式不一定是100％准確.