MLA
Brown, George W. (George Washington), 1820-1915. Picture of a man in a suit and top hat. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjvr-cor.
APA, 6th edition
Brown, George W. (George Washington), 1820-1915. (unknown)[Picture of a man in a suit and top hat]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjvr-cor.
Chicago
Brown, George W. (George Washington), 1820-1915, Picture of a man in a suit and top hat, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjvr-cor.