MLA
Mandell, Leon. Race Relations, 1969-1970 - Letter from Leon Mandell, Chairman of the Department of Chemistry, to Emory President Sanford S. Atwood, Criticizing the List of Requests given by the Black Student Alliance - July 23, 1969. 1969. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22, Folder 9. https://digital.library.emory.edu/purl/815p8czb5s-cor.
APA, 6th edition
Mandell, L. (1969). Race relations, 1969-1970 - Letter from Leon Mandell, Chairman of the Department of Chemistry, to Emory president Sanford S. Atwood, criticizing the list of requests given by the Black Student Alliance - July 23, 1969 (Box 22, Folder 9) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8czb5s-cor.
Chicago
Mandell, Leon. “Race Relations, 1969-1970 - Letter from Leon Mandell, Chairman of the Department of Chemistry, to Emory President Sanford S. Atwood, Criticizing the List of Requests given by the Black Student Alliance - July 23, 1969.” Letters (correspondence). Student Government Association Records, 1969. Box 22, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/815p8czb5s-cor.