Ulmer, R. R., & Ulmer, R. R. (2007). Effective crisis communication Moving from crisis to opportunity Robert R. Ulmer, Timothy L. Sellnow, Matthew W. Seeger. Sage Publications.
Style de citation Chicago (17e éd.)Ulmer, Robert R., et Robert R. Ulmer. Effective Crisis Communication Moving from Crisis to Opportunity Robert R. Ulmer, Timothy L. Sellnow, Matthew W. Seeger. Sage Publications, 2007.
Style de citation MLA (8e éd.)Ulmer, Robert R., et Robert R. Ulmer. Effective Crisis Communication Moving from Crisis to Opportunity Robert R. Ulmer, Timothy L. Sellnow, Matthew W. Seeger. Sage Publications, 2007.
Attention : ces citations peuvent ne pas être correctes à 100%.