Gordon, G. N. (1972). Videocassette technology in American education. Educational Technology.
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Chicago-čujuhus (17. p.)
Gordon, George N. Videocassette Technology in American Education. New Jersey: Educational Technology, 1972.
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MLA-čujuhus (9. p.)
Gordon, George N. Videocassette Technology in American Education. Educational Technology, 1972.
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