APA (7th ed.) Citation

Ziegler Robert L. (2000). Linux firewalls. New Riders.

Chicago Style (17th ed.) Citation

Ziegler Robert L. Linux Firewalls. New Riders, 2000.

MLA (8th ed.) Citation

Ziegler Robert L. Linux Firewalls. New Riders, 2000.

Warning: These citations may not always be 100% accurate.