Popejoy, D. (2017). Lewis and Clark and the Oregon Trail: The winter of our discontent : The Fort Clatsop experience and the brave new world of the Oregon Territory. [Publisher not identified].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPopejoy, Don. Lewis and Clark and the Oregon Trail: The Winter of Our Discontent : The Fort Clatsop Experience and the Brave New World of the Oregon Territory. [Spokane, Wash.]: [Publisher not identified], 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPopejoy, Don. Lewis and Clark and the Oregon Trail: The Winter of Our Discontent : The Fort Clatsop Experience and the Brave New World of the Oregon Territory. [Publisher not identified], 2017.
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