Ridgway, J. (2001). Handbook of media & public relations. Infinity Books.
Chicago Style aipamenaRidgway, Judith. Handbook of Media & Public Relations. New Delhi: Infinity Books, 2001.
MLA aipamenaRidgway, Judith. Handbook of Media & Public Relations. Infinity Books, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.