MLA
Boys Kneeling in Front of a Wire Fence. 1896. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5. https://digital.library.emory.edu/purl/7440rxwdhw-cor.
APA, 6th edition
Boys kneeling in front of a wire fence (Box 5). (1896). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7440rxwdhw-cor.
Chicago
“Boys Kneeling in Front of a Wire Fence.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1896. Box 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7440rxwdhw-cor.