Roddy, D. (2004). Electronic communications (4.). Prentice Hall of India.
Chicago-čujuhus (17. p.)Roddy, Dennis. Electronic Communications. 4. New Delhi: Prentice Hall of India, 2004.
MLA-čujuhus (9. p.)Roddy, Dennis. Electronic Communications. 4. Prentice Hall of India, 2004.
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