MLA
Three Men in Suits, One Wearing Glasses and Handing a Piece of Paper to One of the Other Men. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 32. https://digital.library.emory.edu/purl/047rn8pk4k-cor.
APA, 6th edition
Three men in suits, one wearing glasses and handing a piece of paper to one of the other men (Box 32). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/047rn8pk4k-cor.
Chicago
“Three Men in Suits, One Wearing Glasses and Handing a Piece of Paper to One of the Other Men.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 32. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/047rn8pk4k-cor.