Dyfyniad APA

Broom, G. M., & Center, A. H. (2009). Cutlip & Center's effective public relations (10th ed.). Pearson.

Dyfyniad Arddull Chicago

Broom, Glen M., and Allen H. Center. Cutlip & Center's Effective Public Relations. 10th ed. London: Pearson, 2009.

Dyfyniad MLA

Broom, Glen M., and Allen H. Center. Cutlip & Center's Effective Public Relations. 10th ed. Pearson, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.