Dyfyniad APA

Roddy, D., & Coolen, J. (2008). Electronic communications (4th ed.). Pearson..

Dyfyniad Arddull Chicago

Roddy, Dennis, and John Coolen. Electronic Communications. 4th ed. Nioda.: Pearson., 2008.

Dyfyniad MLA

Roddy, Dennis, and John Coolen. Electronic Communications. 4th ed. Pearson., 2008.

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