Broom, G. M. (2009). Cutlip and centers Effective public relations. Pearson-Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Broom, Glen M. Cutlip and Centers Effective Public Relations. Pearson-Prentice Hall, 2009.
Lua MLA (8ú heag.)Broom, Glen M. Cutlip and Centers Effective Public Relations. Pearson-Prentice Hall, 2009.
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