MLA
The Graham ... Portrait of young man in coat and tie. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08m0v-cor.
APA, 6th edition
The Graham ... (unknown)[Portrait of young man in coat and tie]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08m0v-cor.
Chicago
The Graham .., Portrait of young man in coat and tie, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08m0v-cor.