Dyfyniad APA

Bettinghaus, E. P. (1994). Persuasive communication Campaigns. Harcourt Brace College.

Dyfyniad Arddull Chicago

Bettinghaus, Erwin P. Persuasive Communication Campaigns. Harcourt Brace College, 1994.

Dyfyniad MLA

Bettinghaus, Erwin P. Persuasive Communication Campaigns. Harcourt Brace College, 1994.

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