Cita APA (7a ed.)

Flanagan, W. A. (2012). VoIP and unified communications: Internet telephony and the future voice network (1st edition.). Wiley.

Cita Chicago Style (17a ed.)

Flanagan, William A. VoIP and Unified Communications: Internet Telephony and the Future Voice Network. 1st edition. Hoboken, N.J.: Wiley, 2012.

Cita MLA (9a ed.)

Flanagan, William A. VoIP and Unified Communications: Internet Telephony and the Future Voice Network. 1st edition. Wiley, 2012.