Layman, W. D. (2006). River of memory: The everlasting Columbia. Wenatchee Valley Museum & Cultural Center ; University of Washington Press ; UBC Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLayman, William D. River of Memory: The Everlasting Columbia. Wenatchee, Wash. : Seattle : Vancouver: Wenatchee Valley Museum & Cultural Center ; University of Washington Press ; UBC Press, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLayman, William D. River of Memory: The Everlasting Columbia. Wenatchee Valley Museum & Cultural Center ; University of Washington Press ; UBC Press, 2006.
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