Dyfyniad APA

Wilcox, D. L. (2011). Public relations writing and techniques. Pearson.

Dyfyniad Arddull Chicago

Wilcox, Dennis L. Public Relations Writing and Techniques. New York: Pearson, 2011.

Dyfyniad MLA

Wilcox, Dennis L. Public Relations Writing and Techniques. Pearson, 2011.

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