Ries, A. (2002). Fall of advertising and the rise of PR (NA.). Harper Collins.
Lua i Stíl Chicago (17ú heag.)Ries, Al. Fall of Advertising and the Rise of PR. NA. New York: Harper Collins, 2002.
Lua MLA (9ú heag.)Ries, Al. Fall of Advertising and the Rise of PR. NA. Harper Collins, 2002.
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