MLA
Group of African Americans Sitting on a Stage, with Others Holding Instruments in Front of the Stage. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 23. https://digital.library.emory.edu/purl/798mcvdnhg-cor.
APA, 6th edition
Group of African Americans sitting on a stage, with others holding instruments in front of the stage (Box 23). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdnhg-cor.
Chicago
“Group of African Americans Sitting on a Stage, with Others Holding Instruments in Front of the Stage.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 23. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdnhg-cor.