Geological Survey (U.S.), Smithsonian Institution, & Simkin, T. (1989). This dynamic planet: World map of volcanoes, earthquakes, and plate tectonics. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Smithsonian Institution, and Tom Simkin. This Dynamic Planet: World Map of Volcanoes, Earthquakes, and Plate Tectonics. Reston, VA: Dept. of the Interior, U.S. Geological Survey, 1989.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. This Dynamic Planet: World Map of Volcanoes, Earthquakes, and Plate Tectonics. Dept. of the Interior, U.S. Geological Survey, 1989.
Warning: These citations may not always be 100% accurate.