Barker, C. I. (1950). Pend Oreille County, Washington: History of its past and present.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarker, Charles I. Pend Oreille County, Washington: History of Its Past and Present. [Newport, Wash, 1950.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarker, Charles I. Pend Oreille County, Washington: History of Its Past and Present. 1950.
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