MLA
Man Wearing a Suit, Posing in Front of People Sitting in Chairs. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14. https://digital.library.emory.edu/purl/279v15dv9q-cor.
APA, 6th edition
Man wearing a suit, posing in front of people sitting in chairs (Box 14). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/279v15dv9q-cor.
Chicago
“Man Wearing a Suit, Posing in Front of People Sitting in Chairs.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 14. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/279v15dv9q-cor.