Coombs, W. T. (1999). On going crisis communicationplanning, managing, and responding. Sage.
Chicago Style aipamenaCoombs, W. Timothy. On Going Crisis Communicationplanning, Managing, and Responding. Sage, 1999.
MLA aipamenaCoombs, W. Timothy. On Going Crisis Communicationplanning, Managing, and Responding. Sage, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.