Schramm, W., & Roberts, D. F. (1971). The process and effects of mass communication. University of Illinois Press.
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Dyfyniad Arddull Chicago
Schramm, Wilbur, and Donald F. Roberts. The Process and Effects of Mass Communication. Urbana: University of Illinois Press, 1971.
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Dyfyniad MLA
Schramm, Wilbur, and Donald F. Roberts. The Process and Effects of Mass Communication. University of Illinois Press, 1971.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.