Bethancourt, M., & Eck, P. (1971). A selected bibliography of print and non print media in the audiovisual field. Bureau of Educational Research and Services, Arizona State University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBethancourt, Marcella, और Pamelia Eck. A Selected Bibliography of Print and Non Print Media in the Audiovisual Field. Tempe, Arizona: Bureau of Educational Research and Services, Arizona State University, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBethancourt, Marcella, और Pamelia Eck. A Selected Bibliography of Print and Non Print Media in the Audiovisual Field. Bureau of Educational Research and Services, Arizona State University, 1971.
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