MLA
Two African American Men Holding Rifles While Sitting on Well. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15. https://digital.library.emory.edu/purl/023vt4b8p3-cor.
APA, 6th edition
Two African American men holding rifles while sitting on well (Box 15). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/023vt4b8p3-cor.
Chicago
“Two African American Men Holding Rifles While Sitting on Well.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 15. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/023vt4b8p3-cor.