Popejoy, D. (2019). Lewis and Clark and the Oregon Trail: Lewis and Clark's long journey home. [Publisher not identified].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPopejoy, Don. Lewis and Clark and the Oregon Trail: Lewis and Clark's Long Journey Home. [Spokane, Wash.]: [Publisher not identified], 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPopejoy, Don. Lewis and Clark and the Oregon Trail: Lewis and Clark's Long Journey Home. [Publisher not identified], 2019.
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