O'Connor, G., & Wieda, K. (2001). Northwest arid lands: An introduction to the Columbia Basin shrub-steppe. Battelle Press ; Distributed by University of Washington Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Connor, Georganne, और Karen Wieda. Northwest Arid Lands: An Introduction to the Columbia Basin Shrub-steppe. Columbus, OH : Seattle, WA: Battelle Press ; Distributed by University of Washington Press, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Connor, Georganne, और Karen Wieda. Northwest Arid Lands: An Introduction to the Columbia Basin Shrub-steppe. Battelle Press ; Distributed by University of Washington Press, 2001.
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