Citazione Stile APA (7a Edizione)

Flanagan, W. A. (2012). VoIP and unified communications: Internet telephony and the future voice network. John Wiley and Sons, Inc.

Citazione stile Chigago Style (17a edizione)

Flanagan, William A. VoIP and Unified Communications: Internet Telephony and the Future Voice Network. Hoboken: John Wiley and Sons, Inc, 2012.

Citatione MLA (9a ed.)

Flanagan, William A. VoIP and Unified Communications: Internet Telephony and the Future Voice Network. John Wiley and Sons, Inc, 2012.