MLA
Three Men Sitting with Stringed Instruments with Another Man Standing behind Them. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 24. https://digital.library.emory.edu/purl/897kprr52q-cor.
APA, 6th edition
Three men sitting with stringed instruments with another man standing behind them (Box 24). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr52q-cor.
Chicago
“Three Men Sitting with Stringed Instruments with Another Man Standing behind Them.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 24. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr52q-cor.