APA (7th ed.) Citation

Gates, A. E., & Ritchie, D. 1. S. 1. (2007). Encyclopedia of earthquakes and volcanoes [electronic resource] (3rd ed.). Facts on File.

Chicago Style (17th ed.) Citation

Gates, Alexander E., and David 1952 September 18- Ritchie. Encyclopedia of Earthquakes and Volcanoes [electronic Resource]. 3rd ed. New York: Facts on File, 2007.

MLA (9th ed.) Citation

Gates, Alexander E., and David 1952 September 18- Ritchie. Encyclopedia of Earthquakes and Volcanoes [electronic Resource]. 3rd ed. Facts on File, 2007.