Appleton, J. B. (1943). Pacific northwest resources. Northwest Regional Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAppleton, John B. Pacific Northwest Resources. Portland, Ore.: Northwest Regional Council, 1943.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAppleton, John B. Pacific Northwest Resources. Northwest Regional Council, 1943.
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