APA (7th ed.) Citation

Behrens, T., Riley, C., & Khan, U. (2005). Cisco PIX firewalls: Configure, manage, & troubleshoot. Syngress Pub..

Chicago Style (17th ed.) Citation

Behrens, Thorsten, Charles Riley, and Umer Khan. Cisco PIX Firewalls: Configure, Manage, & Troubleshoot. Rockland, Mass.: Syngress Pub., 2005.

MLA (9th ed.) Citation

Behrens, Thorsten, et al. Cisco PIX Firewalls: Configure, Manage, & Troubleshoot. Syngress Pub., 2005.