Doolittle, H. J., & Libby, G. W. Voices of the pioneers. Spokane Public Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDoolittle, Harold James, और George W. Libby. Voices of the Pioneers. [Spokane, WA: Spokane Public Library.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDoolittle, Harold James, और George W. Libby. Voices of the Pioneers. Spokane Public Library.
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