Dyfyniad APA
Severin, W. J., & Tankard, J. W. (1979). Communication theories: Origin, methods, and users in the mass media. Longman.
Dyfyniad Arddull Chicago
Severin, Werner J., and James W. Tankard. Communication Theories: Origin, Methods, and Users in the Mass Media. New York: Longman, 1979.
Dyfyniad MLA
Severin, Werner J., and James W. Tankard. Communication Theories: Origin, Methods, and Users in the Mass Media. Longman, 1979.
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