McFarland, C. R. (1983). Oil and gas exploration in Washington, 1900-1982. State of Washington, Dept. of Natural Resources, Division of Geology and Earth Resources.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcFarland, Carl R. Oil and Gas Exploration in Washington, 1900-1982. Olympia, Wash.: State of Washington, Dept. of Natural Resources, Division of Geology and Earth Resources, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcFarland, Carl R. Oil and Gas Exploration in Washington, 1900-1982. State of Washington, Dept. of Natural Resources, Division of Geology and Earth Resources, 1983.
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