Heyer, P. (1988). Communications and history: Theories of media, knowledge, and civilization. Greenwood Press.
Citace podle Chicago (17th ed.)Heyer, Paul. Communications and History: Theories of Media, Knowledge, and Civilization. New York: Greenwood Press, 1988.
Citace podle MLA (9th ed.)Heyer, Paul. Communications and History: Theories of Media, Knowledge, and Civilization. Greenwood Press, 1988.
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