MLA
Two African American Men Seated on Chairs in a Room with a Window with Open Curtains behind Them Playing Guitars, One Is Wearing a Hat the Other Smoking a Cigarette. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 27. https://digital.library.emory.edu/purl/924wh70s3r-cor.
APA, 6th edition
Two African American men seated on chairs in a room with a window with open curtains behind them playing guitars, one is wearing a hat the other smoking a cigarette (Box 27). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70s3r-cor.
Chicago
“Two African American Men Seated on Chairs in a Room with a Window with Open Curtains behind Them Playing Guitars, One Is Wearing a Hat the Other Smoking a Cigarette.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 27. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70s3r-cor.