Dyfyniad APA

Held, G. (2002). Understanding data communications (7th ed.). Addison-Wesley, ; Pearson Education.

Dyfyniad Arddull Chicago

Held, Gilbert. Understanding Data Communications. 7th ed. Boston : New Delhi: Addison-Wesley, ; Pearson Education, 2002.

Dyfyniad MLA

Held, Gilbert. Understanding Data Communications. 7th ed. Addison-Wesley, ; Pearson Education, 2002.

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