R.P.Singh & S.D.Sapre. (1995). Communication systems: Analog and digital (1st.). TMH.
Chicago Style aipamenaR.P.Singh and S.D.Sapre. Communication Systems: Analog and Digital. 1st. New Delhi: TMH, 1995.
MLA aipamenaR.P.Singh and S.D.Sapre. Communication Systems: Analog and Digital. 1st. TMH, 1995.
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