Shea, T. (2018). The Louisiana Purchase and the Lewis and Clark Expedition. Britannica Education Publishing in association with Rosen Educational Services.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Shea, Therese. The Louisiana Purchase and the Lewis and Clark Expedition. New York: Britannica Education Publishing in association with Rosen Educational Services, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Shea, Therese. The Louisiana Purchase and the Lewis and Clark Expedition. Britannica Education Publishing in association with Rosen Educational Services, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.