Cutlip, S. M., Broom, G. M., & Center, A. H. (1994). Effective public relations (7th ed.). Prentice-Hall International.
Dyfyniad Arddull ChicagoCutlip, Scott M., Glen M. Broom, and Allen H. Center. Effective Public Relations. 7th ed. Englewood Cliffs, N.J: Prentice-Hall International, 1994.
Dyfyniad MLACutlip, Scott M., et al. Effective Public Relations. 7th ed. Prentice-Hall International, 1994.
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