APA (7th ed.) Zitazioa
Ulmer, R. R., Seeger, M. W., & Sellnow, T. L. (2011). Effective crisis communication: Moving from crisis to opportunity (2nd ed.). SAGE.
Chicago Style (17th ed.) Zitazioa
Ulmer, Robert R., Mathew W. Seeger, eta Timothy L. Sellnow. Effective Crisis Communication: Moving from Crisis to Opportunity. 2nd ed. Los Angeles: SAGE, 2011.
MLA (9th ed.) Zitazioa
Ulmer, Robert R., et al. Effective Crisis Communication: Moving from Crisis to Opportunity. 2nd ed. SAGE, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.