Upton, R. (1983). The Indian as a soldier at Fort Custer, Montana, 1890-1895: Lieutenant Samuel C. Robertson's First Cavalry Crow Indian contingent. R. Upton.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Upton, Richard. The Indian as a Soldier at Fort Custer, Montana, 1890-1895: Lieutenant Samuel C. Robertson's First Cavalry Crow Indian Contingent. El Segundo, Calif.: R. Upton, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Upton, Richard. The Indian as a Soldier at Fort Custer, Montana, 1890-1895: Lieutenant Samuel C. Robertson's First Cavalry Crow Indian Contingent. R. Upton, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.