Roddy, D., & Coolen, J. (1995). Electronic communications (4th ed.). Prentice Hall Career and Technology.
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Dyfyniad Arddull Chicago
Roddy, Dennis, and John Coolen. Electronic Communications. 4th ed. Englewood Cliffs, NJ : New Delhi: Prentice Hall Career and Technology, 1995.
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Dyfyniad MLA
Roddy, Dennis, and John Coolen. Electronic Communications. 4th ed. Prentice Hall Career and Technology, 1995.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.