O'KEEFE, D. J. (2016). Persuasion theory and research 3rd ed. Sage.
Lua i Stíl Chicago (17ú heag.)O'KEEFE, Daniel J. Persuasion Theory and Research 3rd Ed. Sage, 2016.
Lua MLA (8ú heag.)O'KEEFE, Daniel J. Persuasion Theory and Research 3rd Ed. Sage, 2016.
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