Dyfyniad APA

DeFleur, M. L., & Ball-Rokeach, S. (1989). Theories of mass communication (5th ed.). Longman.

Dyfyniad Arddull Chicago

DeFleur, Melvin L., and Sandra Ball-Rokeach. Theories of Mass Communication. 5th ed. New York: Longman, 1989.

Dyfyniad MLA

DeFleur, Melvin L., and Sandra Ball-Rokeach. Theories of Mass Communication. 5th ed. Longman, 1989.

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