Alt, D. D., & Hyndman, D. W. (1995). Northwest exposures: A geologic study of the Northwest. Mountain Press Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlt, David D., और Donald W. Hyndman. Northwest Exposures: A Geologic Study of the Northwest. Missoula, Mont.: Mountain Press Pub., 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAlt, David D., और Donald W. Hyndman. Northwest Exposures: A Geologic Study of the Northwest. Mountain Press Pub., 1995.
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