MLA
African American Man Holding a Rope Tied to Two Horses, with Another Horse Standing next to Him, with a Bridge over a River behind Him. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 30. https://digital.library.emory.edu/purl/204rjdfn6k-cor.
APA, 6th edition
African American man holding a rope tied to two horses, with another horse standing next to him, with a bridge over a river behind him (Box 30). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/204rjdfn6k-cor.
Chicago
“African American Man Holding a Rope Tied to Two Horses, with Another Horse Standing next to Him, with a Bridge over a River behind Him.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 30. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/204rjdfn6k-cor.