MLA
Edball. A Man Sitting on a Bench, Holding a Cane, next to an African American Boy in a Sailor Outfit. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 61. https://digital.library.emory.edu/purl/28380gb5px-cor.
APA, 6th edition
E. A man sitting on a bench, holding a cane, next to an African American boy in a sailor outfit (Box 61) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/28380gb5px-cor.
Chicago
Edball. “A Man Sitting on a Bench, Holding a Cane, next to an African American Boy in a Sailor Outfit.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 61. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/28380gb5px-cor.