Dyfyniad APA

Seitel, F. P. (2007). The practice of public relations (10th ed.). Pearson Education International.

Dyfyniad Arddull Chicago

Seitel, Fraser P. The Practice of Public Relations. 10th ed. Upper Saddle River, N.J: Pearson Education International, 2007.

Dyfyniad MLA

Seitel, Fraser P. The Practice of Public Relations. 10th ed. Pearson Education International, 2007.

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