Ulrich, R. (1999). Empty nets: Indians, dams, and the Columbia River. Oregon State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUlrich, Roberta. Empty Nets: Indians, Dams, and the Columbia River. Corvallis, OR: Oregon State University Press, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUlrich, Roberta. Empty Nets: Indians, Dams, and the Columbia River. Oregon State University Press, 1999.
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