Reddy, T. G. (1977). Effect of channel variation on message comprehension among extension workers [microform]. Photoduplication Service. University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रReddy, Thumma George. Effect of Channel Variation on Message Comprehension Among Extension Workers [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रReddy, Thumma George. Effect of Channel Variation on Message Comprehension Among Extension Workers [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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