APA (7th ed.) Citation

(2006). Practical VoIP security Thomas Porter ... [et al.]. Syngress.

Chicago Style (17th ed.) Citation

Practical VoIP Security Thomas Porter ... [et Al.]. Rockland, Mass.: Syngress, 2006.

MLA (9th ed.) Citation

Practical VoIP Security Thomas Porter ... [et Al.]. Syngress, 2006.

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