Korosec, M. A., Rigby, J. G., & Stoffel, K. L. (1980). The 1980 eruption of Mount St. Helens, Washington. Washington State Dept. of Natural Resources, Division of Geology and Earth Resources.
Chicago Style (17th ed.) CitationKorosec, M. A., James G. Rigby, and Keith L. Stoffel. The 1980 Eruption of Mount St. Helens, Washington. Olympia: Washington State Dept. of Natural Resources, Division of Geology and Earth Resources, 1980.
MLA (8th ed.) CitationKorosec, M. A., et al. The 1980 Eruption of Mount St. Helens, Washington. Washington State Dept. of Natural Resources, Division of Geology and Earth Resources, 1980.
Warning: These citations may not always be 100% accurate.