MLA
Six African American Men Wearing Hats and Carrying Rifles Standing in a Row in a Field. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 32. https://digital.library.emory.edu/purl/552w3r22d9-cor.
APA, 6th edition
Six African American men wearing hats and carrying rifles standing in a row in a field (Box 32). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22d9-cor.
Chicago
“Six African American Men Wearing Hats and Carrying Rifles Standing in a Row in a Field.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 32. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22d9-cor.