APA (7th ed.) Citation

Neal, C., & Guffanti, M. (2010). Airborne volcanic ash: A global threat to aviation. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Neal, Christina, and Marianne Guffanti. Airborne Volcanic Ash: A Global Threat to Aviation. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2010.

MLA (9th ed.) Citation

Neal, Christina, and Marianne Guffanti. Airborne Volcanic Ash: A Global Threat to Aviation. U.S. Dept. of the Interior, U.S. Geological Survey, 2010.