Não informado. (1966). Educational Technology. Educational Technology Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Educational Technology. Englewood, NJ: Educational Technology Publications, 1966.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Educational Technology. Educational Technology Publications, 1966.
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