MLA
Portrait of an African American Man in Graduation Cap and Gown with Diploma in Left Hand. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 17. https://digital.library.emory.edu/purl/7956djhb43-cor.
APA, 6th edition
Portrait of an African American man in graduation cap and gown with diploma in left hand (Box 17). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7956djhb43-cor.
Chicago
“Portrait of an African American Man in Graduation Cap and Gown with Diploma in Left Hand.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 17. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7956djhb43-cor.