Dyfyniad APA
Abrahams, J. R., & Lollo, M. (2003). Centrex or PBX: The impact of IP. Artech House.
Dyfyniad Arddull Chicago
Abrahams, John R., and Mauro Lollo. Centrex or PBX: The Impact of IP. Boston: Artech House, 2003.
Dyfyniad MLA
Abrahams, John R., and Mauro Lollo. Centrex or PBX: The Impact of IP. Artech House, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.