Ries, A. (2004). The Fall of Advertising & The Rise of PR. Gramedia.
Chicago Style aipamenaRies, Al. The Fall of Advertising & The Rise of PR. Gramedia, 2004.
MLA aipamenaRies, Al. The Fall of Advertising & The Rise of PR. Gramedia, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.