Tworzydlo, D., & Humenny, G. Three worlds of public relations.
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Citação norma Chicago
Tworzydlo, Dariusz, and Grzegorz Humenny. Three Worlds of Public Relations.
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Citação norma MLA
Tworzydlo, Dariusz, and Grzegorz Humenny. Three Worlds of Public Relations.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.