Dyfyniad APA

HERSENT OLIVIER. (2005). IP TELEPHONY (2ND ED.). JOHN WILEY AND SONS LTD PUB.

Dyfyniad Arddull Chicago

HERSENT OLIVIER. IP TELEPHONY. 2ND ED. UK: JOHN WILEY AND SONS LTD PUB, 2005.

Dyfyniad MLA

HERSENT OLIVIER. IP TELEPHONY. 2ND ED. JOHN WILEY AND SONS LTD PUB, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.