MLA
Four Men Filing Mail into Slots. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 29. https://digital.library.emory.edu/purl/160cvdncp8-cor.
APA, 6th edition
Four men filing mail into slots (Box 29). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/160cvdncp8-cor.
Chicago
“Four Men Filing Mail into Slots.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/160cvdncp8-cor.