MLA
Roberts, Joshua. Unidentified Speakers and Entertainers - Portrait Photograph of a Unidentified Man. 1982. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 2. https://digital.library.emory.edu/purl/26663xsjs5-cor.
APA, 6th edition
Roberts, J. (1982). Unidentified Speakers and Entertainers - Portrait photograph of a unidentified man (Box 7, Folder 2) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/26663xsjs5-cor.
Chicago
Roberts, Joshua. “Unidentified Speakers and Entertainers - Portrait Photograph of a Unidentified Man.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1982. Box 7, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/26663xsjs5-cor.