MLA
African American Man Sitting on a Chair Wearing a Suit, with One Arm on the Armrest. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/699n2z34wh-cor.
APA, 6th edition
African American man sitting on a chair wearing a suit, with one arm on the armrest (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34wh-cor.
Chicago
“African American Man Sitting on a Chair Wearing a Suit, with One Arm on the Armrest.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34wh-cor.