Geological Survey (U.S.) & Washington (State). Department of Natural Resources. (1981). Spokane NW quadrangle, Washington: 7.5 minute series (orthophotoquad). Geological Survey.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.) और Washington (State). Department of Natural Resources. Spokane NW Quadrangle, Washington: 7.5 Minute Series (orthophotoquad). Denver, Colo.: Geological Survey, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.) और Washington (State). Department of Natural Resources. Spokane NW Quadrangle, Washington: 7.5 Minute Series (orthophotoquad). Geological Survey, 1981.
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