Ramsey, D. W., Dutton, D. R., & Bacon, C. R. (2008). Geologic map of Mount Mazama and Crater Lake Caldera, Oregon. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationRamsey, David W., Dillon R. Dutton, and Charles R. Bacon. Geologic Map of Mount Mazama and Crater Lake Caldera, Oregon. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2008.
MLA (9th ed.) CitationRamsey, David W., et al. Geologic Map of Mount Mazama and Crater Lake Caldera, Oregon. U.S. Dept. of the Interior, U.S. Geological Survey, 2008.
Warning: These citations may not always be 100% accurate.