UNISDR (United Nations International Strategy for Disaster Reduction Secretariat). 2007. Hyogo Framework for Action 2005-2015: Building the Resilience of Nations and Communities to Disasters. Geneva, Switzerland: UN/ISDR. Available at http://www.unisdr.org/files/1037_hyogoframeworkforactionenglish.pdf.
UNISDR. 2011. Terminology. Available at www.unisdr.org/we/inform/terminology.
White, G. F., and J. E. Haas. 1975. Assessment of Research on Natural Hazards. Cambridge, MA: MIT Press.
White House and DHS (Department of Homeland Security). 2011. Presidential Policy Directive-8. Available at http://www.dhs.gov/xlibrary/assets/presidential-policy-directive-8-national-preparedness.pdf.