MLA
Gallery., Parlor. Portrait of an African American Man in a Suit with a Mustache. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 17. https://digital.library.emory.edu/purl/6451g1jx2s-cor.
APA, 6th edition
Gallery., P. Portrait of an African American man in a suit with a mustache (Box 17) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jx2s-cor.
Chicago
Gallery., Parlor. “Portrait of an African American Man in a Suit with a Mustache.” 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/6451g1jx2s-cor.