Drury, C. M. (1940). Elkanah and Mary Walker, pioneers among the Spokanes. The Caxton Printers, Ltd..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDrury, Clifford Merrill. Elkanah and Mary Walker, Pioneers Among the Spokanes. Caldwell, Id.: The Caxton Printers, Ltd., 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDrury, Clifford Merrill. Elkanah and Mary Walker, Pioneers Among the Spokanes. The Caxton Printers, Ltd., 1940.
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