Webber, B., Pringle, V. K., & Billeter, A. (1996). Over the Applegate Trail to Oregon in 1846: The Pringle diary and other pertinences ; the unabridged diary. Webb Research Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWebber, Bert, Virgil K. Pringle, और Anne Billeter. Over the Applegate Trail to Oregon in 1846: The Pringle Diary and Other Pertinences ; the Unabridged Diary. Medford, OR: Webb Research Group, 1996.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWebber, Bert, et al. Over the Applegate Trail to Oregon in 1846: The Pringle Diary and Other Pertinences ; the Unabridged Diary. Webb Research Group, 1996.
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