Coombs, W. T. (1999). On going crisis communicationplanning, managing, and responding. Sage.
Lua i Stíl Chicago (17ú heag.)Coombs, W. Timothy. On Going Crisis Communicationplanning, Managing, and Responding. Sage, 1999.
Lua MLA (8ú heag.)Coombs, W. Timothy. On Going Crisis Communicationplanning, Managing, and Responding. Sage, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.