MLA
Massey, David. Black Studies, Administrative Materials - Letter from David Massey to Paul M. Cousins, Assistant Librarian, Updating Him on the Progress Made in Stocking the Newly Created “Afro-American Reading Room” at Candler Library - August 23, 1969. 1969. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 10, Folder 4. https://digital.library.emory.edu/purl/904dncjv8q-cor.
APA, 6th edition
Massey, D. (1969). Black Studies, administrative materials - Letter from David Massey to Paul M. Cousins, Assistant Librarian, updating him on the progress made in stocking the newly created “Afro-American Reading Room” at Candler Library - August 23, 1969 (Box 10, Folder 4) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/904dncjv8q-cor.
Chicago
Massey, David. “Black Studies, Administrative Materials - Letter from David Massey to Paul M. Cousins, Assistant Librarian, Updating Him on the Progress Made in Stocking the Newly Created ‘Afro-American Reading Room’ at Candler Library - August 23, 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/904dncjv8q-cor.