Daniel Collins. (2003). Carrier grade voice over IP. New York: McGraw-Hill.
Chicago Style CitationDaniel Collins. Carrier Grade Voice Over IP. New York: McGraw-Hill, 2003.
Cita MLADaniel Collins. Carrier Grade Voice Over IP. New York: McGraw-Hill, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.