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.
Čikaški stil citiranja (17. izdanje)Bethancourt, Marcella, i 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.
MLA način citiranja (9. izdanje)Bethancourt, Marcella, i 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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