Froehlich, A. (2012). CVOICE 8.0: Implementing Cisco Unified Communications Voice over IP and QoS v8.0. Wiley.
Dyfyniad Arddull ChicagoFroehlich, Andrew. CVOICE 8.0: Implementing Cisco Unified Communications Voice over IP and QoS V8.0. Indianapolis, IN: Wiley, 2012.
Dyfyniad MLAFroehlich, Andrew. CVOICE 8.0: Implementing Cisco Unified Communications Voice over IP and QoS V8.0. Wiley, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.