MLA
Atwood, Sanford S. (Sanford Soverhill), 1912-2002. Black Studies, administrative materials - Letter from Emory president Sanford S. Atwood to Reuben Alexander Day Jr. thanking him for the letter he wrote to the incoming freshmen class as well as his involvement in the University Centers for Rational Alternatives - September 23, 1969. September 23, 1969. Office of the President Subject Files. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqkwn-cor.
APA, 6th edition
Atwood, Sanford S. (Sanford Soverhill), 1912-2002. (September 23, 1969)[Black Studies, administrative materials - Letter from Emory president Sanford S. Atwood to Reuben Alexander Day Jr. thanking him for the letter he wrote to the incoming freshmen class as well as his involvement in the University Centers for Rational Alternatives - September 23, 1969]. Office of the President Subject Files, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqkwn-cor.
Chicago
Atwood, Sanford S. (Sanford Soverhill), 1912-2002, Black Studies, administrative materials - Letter from Emory president Sanford S. Atwood to Reuben Alexander Day Jr. thanking him for the letter he wrote to the incoming freshmen class as well as his involvement in the University Centers for Rational Alternatives - September 23, 1969, September 23, 1969, Office of the President Subject Files, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqkwn-cor.