Popejoy, D. (2016). Lewis and Clark and the Oregon Trail: Where the Oregon Trail meets the Columbia River. [Publisher not identified].
Cita Chicago Style (17a ed.)Popejoy, Don. Lewis and Clark and the Oregon Trail: Where the Oregon Trail Meets the Columbia River. [Spokane, Wash.]: [Publisher not identified], 2016.
Cita MLA (8a ed.)Popejoy, Don. Lewis and Clark and the Oregon Trail: Where the Oregon Trail Meets the Columbia River. [Publisher not identified], 2016.
Precaución: Estas citas no son 100% exactas.