Geological Survey (U.S.), Washington (State). Division of Mines and Geology, & United States. Congress. Senate. Committee on Interior and Insular Affairs. (1978). Geology of Washington. State of Washington, Dept. of Natural Resources.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.), Washington (State). Division of Mines and Geology, और United States. Congress. Senate. Committee on Interior and Insular Affairs. Geology of Washington. Olympia: State of Washington, Dept. of Natural Resources, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.), et al. Geology of Washington. State of Washington, Dept. of Natural Resources, 1978.
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