APA Citation

(1987). Earthquakes & volcanoes. Reston, Va.: U.S. Geological Survey.

Chicago Style Citation

Earthquakes & Volcanoes. Reston, Va.: U.S. Geological Survey, 1987.

MLA Citation

Earthquakes & Volcanoes. Reston, Va.: U.S. Geological Survey, 1987.

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