Cita APA (7th ed.)
Ulmer, R. R., Seeger, M. W., & Sellnow, T. L. (2011). Effective crisis communication: Moving from crisis to opportunity. Sage.
Cita Chicago (17th ed.)
Ulmer, Robert R., Mathew W. Seeger, i Timothy L. Sellnow. Effective Crisis Communication: Moving from Crisis to Opportunity. Los Angeles: Sage, 2011.
Cita MLA (9th ed.)
Ulmer, Robert R., et al. Effective Crisis Communication: Moving from Crisis to Opportunity. Sage, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.