APA-viite (7. p.)
Flanagan, W. A. (2012). VoIP and unified communications: Internet telephony and the future voice network. Wiley.
Chicago-viite (17. p.)
Flanagan, William A. VoIP and Unified Communications: Internet Telephony and the Future Voice Network. Hoboken, N.J.: Wiley, 2012.
MLA-viite (9. p.)
Flanagan, William A. VoIP and Unified Communications: Internet Telephony and the Future Voice Network. Wiley, 2012.
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