Keller, E. A., DeVecchio, D. E., & Blodgett, R. H. Natural hazards: Earth's processes as hazards, disasters, and catastrophes (3rd ed.).
Lua i Stíl Chicago (17ú heag.)Keller, Edward A., Duane E. DeVecchio, agus Robert H. Blodgett. Natural Hazards: Earth's Processes as Hazards, Disasters, and Catastrophes. 3rd ed.
Lua MLA (8ú heag.)Keller, Edward A., et al. Natural Hazards: Earth's Processes as Hazards, Disasters, and Catastrophes. 3rd ed.
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