APA (7th ed.) Citation

Ohrtman, F. (2003). Softswitch: Architecture for VoIP. McGraw-Hill.

Chicago Style (17th ed.) Citation

Ohrtman, Frank. Softswitch: Architecture for VoIP. New York: McGraw-Hill, 2003.

MLA (9th ed.) Citation

Ohrtman, Frank. Softswitch: Architecture for VoIP. McGraw-Hill, 2003.