1. Federal Emergency Management Agency. (2008). “Typed resource definitions: Public works resources.” Rep. FEMA 508-7 U.S. Dept. of Homeland Security Washington DC. 〈http://www.fema.gov/pdf/emergency/nims/508-7_public_works_resources.pdf〉 (Mar. 13 2012).
2. Federal Emergency Management Agency. (2012). “Preparedness.” 〈http://www.fema.gov/prepared/〉 (Feb. 28 2012).