Keller, E. A., & Blodgett, R. H. (2008). Natural hazards: Earth's processes as hazards, disasters, and catastrophes (2nd ed.). Pearson/Prentice Hall.
芝加哥风格引文Keller, Edward A., 与 Robert H. Blodgett. Natural Hazards: Earth's Processes as Hazards, Disasters, and Catastrophes. 2nd ed. Upper Saddle River, NJ: Pearson/Prentice Hall, 2008.
MLA引文Keller, Edward A., 与 Robert H. Blodgett. Natural Hazards: Earth's Processes as Hazards, Disasters, and Catastrophes. 2nd ed. Pearson/Prentice Hall, 2008.
警告：这些引文格式不一定是100％准确.