Dyfyniad APA

Held, G. (1994). Understanding data communications (4th ed.). Sams Pub.

Dyfyniad Arddull Chicago

Held, Gilbert. Understanding Data Communications. 4th ed. Carmel, Ind: Sams Pub, 1994.

Dyfyniad MLA

Held, Gilbert. Understanding Data Communications. 4th ed. Sams Pub, 1994.

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