Dyfyniad APA

Held, G. (2003). Understanding data communications (7th ed.). Pearson Education.

Dyfyniad Arddull Chicago

Held, Gilbert. Understanding Data Communications. 7th ed. Delhi: Pearson Education, 2003.

Dyfyniad MLA

Held, Gilbert. Understanding Data Communications. 7th ed. Pearson Education, 2003.

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