Olson, D. R. (1974). Media and symbols: The forms of expression, communication, and education. National Society for the Study of Education : distributed by the University of Chicago Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Olson, David R. Media and Symbols: The Forms of Expression, Communication, and Education. Chicago: National Society for the Study of Education : distributed by the University of Chicago Press, 1974.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Olson, David R. Media and Symbols: The Forms of Expression, Communication, and Education. National Society for the Study of Education : distributed by the University of Chicago Press, 1974.
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