MLA
African American Jockey Holding a Horse by a Rope, with a Man Smoking a Pipe Standing next to Him. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 38. https://digital.library.emory.edu/purl/296wwpzgrz-cor.
APA, 6th edition
African American jockey holding a horse by a rope, with a man smoking a pipe standing next to him (Box 38). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgrz-cor.
Chicago
“African American Jockey Holding a Horse by a Rope, with a Man Smoking a Pipe Standing next to Him.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 38. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgrz-cor.