MLA
Studio., Home Portrait. Side Portrait of an African American Man in Suit and Bow Tie. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 18. https://digital.library.emory.edu/purl/634sj3txmk-cor.
APA, 6th edition
Studio., H. P. Side portrait of an African American man in suit and bow tie (Box 18) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txmk-cor.
Chicago
Studio., Home Portrait. “Side Portrait of an African American Man in Suit and Bow Tie.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 18. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txmk-cor.