Chaffins, C. J. (1949). Map of Spokane Valley: Spokane County, Washington. Spokane Valley Chamber of Commerce.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChaffins, C. J. Map of Spokane Valley: Spokane County, Washington. Opportunity, Wash.: Spokane Valley Chamber of Commerce, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChaffins, C. J. Map of Spokane Valley: Spokane County, Washington. Spokane Valley Chamber of Commerce, 1949.
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