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.) CitationNewhall, 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.) CitationNewhall, Christopher G., et al. The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines. U.S. Geological Survey, 1997.
Warning: These citations may not always be 100% accurate.