Beach, P. (2018). Wheat country railroad: The Northern Pacific's Spokane & Palouse and competitors. Washington State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBeach, Phil. Wheat Country Railroad: The Northern Pacific's Spokane & Palouse and Competitors. Pullman, Washington: Washington State University Press, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBeach, Phil. Wheat Country Railroad: The Northern Pacific's Spokane & Palouse and Competitors. Washington State University Press, 2018.
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