Eastman, C. A. (1925). (Burial place of Sacajawea) letter from Chas. A. Eastman, inspector and investigator, to the Commissioner of Indian Affairs.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Eastman, Charles A. (Burial Place of Sacajawea) Letter from Chas. A. Eastman, Inspector and Investigator, to the Commissioner of Indian Affairs. Washington, D.C, 1925.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Eastman, Charles A. (Burial Place of Sacajawea) Letter from Chas. A. Eastman, Inspector and Investigator, to the Commissioner of Indian Affairs. 1925.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.