APA (7th ed.) Citation

Newhall, C. G., Hendley, J. W., Stauffer, P. H., Philippines. Armed Forces, & Geological Survey. (1997). The cataclysmic 1991 eruption of Mount Pinatubo, Philippines. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Newhall, Christopher G., James W. Hendley, Peter H. Stauffer, Philippines. Armed Forces, and Geological Survey. The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines. [Vancouver, WA?]: U.S. Geological Survey, 1997.

MLA (8th ed.) Citation

Newhall, Christopher G., et al. The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines. U.S. Geological Survey, 1997.