Quarantelli, E.L.. Catastrophes are Different from Disasters: Some Implications for Crisis Planning and Managing Drawn from Katrina.. Newark, DE:  Disaster Research Center, University of Delaware, 2006.

Quarantelli, E.L.. "What Is A Disaster? Perspectives on the Question." Routledge: London and New York (1998): 228.

Quarantelli, E.L.. "Just as a Disaster is not Simply a Big Incident, So a Catastrophe is not Just a Big Disaster." Journal of the American Society of Professional Emergency Planners 3 (1996): 68-71.