APA (7th ed.) Citation

Porter, T. (2006). Practical VoIP Security. Syngress Publishing.

Chicago Style (17th ed.) Citation

Porter, Thomas. Practical VoIP Security. Rockland, MA: Syngress Publishing, 2006.

MLA (9th ed.) Citation

Porter, Thomas. Practical VoIP Security. Syngress Publishing, 2006.

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