Geological Survey (U.S.), Kuntz, M. A., Rowley, P. D., & MacLeod, N. S. (1990). Geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Mel A. Kuntz, Peter D. Rowley, and Norman S. MacLeod. Geologic Maps of Pyroclastic-flow and Related Deposits of the 1980 Eruptions of Mount St. Helens, Washington. Reston, Va.: The Survey, 1990.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Geologic Maps of Pyroclastic-flow and Related Deposits of the 1980 Eruptions of Mount St. Helens, Washington. The Survey, 1990.
Warning: These citations may not always be 100% accurate.