MLA
Beardslee, William A. Black Studies, Administrative Materials - Letter from William A. Beardslee to Emory President Sanford S. Atwood, Urging Him to Continue in the Process of Diversifying the Student Body at Emory University - December 5, 1969. 1969. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 10, Folder 4. https://digital.library.emory.edu/purl/85370rxxr7-cor.
APA, 6th edition
Beardslee, W. A. (1969). Black Studies, administrative materials - Letter from William A. Beardslee to Emory president Sanford S. Atwood, urging him to continue in the process of diversifying the student body at Emory University - December 5, 1969 (Box 10, Folder 4) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxxr7-cor.
Chicago
Beardslee, William A. “Black Studies, Administrative Materials - Letter from William A. Beardslee to Emory President Sanford S. Atwood, Urging Him to Continue in the Process of Diversifying the Student Body at Emory University - December 5, 1969.” Letters (correspondence). Office of the President Subject Files, 1969. Box 10, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxxr7-cor.