MLA
Davis Photo Co. (Roanoke, Va.). Portrait of an African American man wearing a suit. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/235gb5mknv-cor.
APA, 6th edition
Davis Photo Co. (Roanoke, Va.). (unknown)[Portrait of an African American man wearing a suit]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/235gb5mknv-cor.
Chicago
Davis Photo Co. (Roanoke, Va.), Portrait of an African American man wearing a suit, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/235gb5mknv-cor.