MLA
Freeman, Daniel, 1868-1927. Portrait of Chas. H. Marshall, M.D.. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6558cz8whc-cor.
APA, 6th edition
Freeman, Daniel, 1868-1927. (unknown)[Portrait of Chas. H. Marshall, M.D.]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6558cz8whc-cor.
Chicago
Freeman, Daniel, 1868-1927, Portrait of Chas. H. Marshall, M.D., unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6558cz8whc-cor.