Perry, R. W., & Lindell, M. K. (1990). Living with Mount St. Helens: Human adjustment to volcano hazards. Washington State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerry, Ronald W., और Michael K. Lindell. Living with Mount St. Helens: Human Adjustment to Volcano Hazards. Pullman, Wash.: Washington State University Press, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPerry, Ronald W., और Michael K. Lindell. Living with Mount St. Helens: Human Adjustment to Volcano Hazards. Washington State University Press, 1990.
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