APA (7th ed.) Citation

Gates, A. E., & Ritchie, D. (2007). Encyclopedia of earthquakes and volcanoes (3rd ed.). Facts on file.

Chicago Style (17th ed.) Citation

Gates, Alexander E., and David Ritchie. Encyclopedia of Earthquakes and Volcanoes. 3rd ed. New York: Facts on file, 2007.

MLA (9th ed.) Citation

Gates, Alexander E., and David Ritchie. Encyclopedia of Earthquakes and Volcanoes. 3rd ed. Facts on file, 2007.

Warning: These citations may not always be 100% accurate.