MLA
Four Horseshoers in Front of a Barn with Two Horses. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 29. https://digital.library.emory.edu/purl/600ns1rnf0-cor.
APA, 6th edition
Four horseshoers in front of a barn with two horses (Box 29). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/600ns1rnf0-cor.
Chicago
“Four Horseshoers in Front of a Barn with Two Horses.” 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/600ns1rnf0-cor.