MLA
Ellis (St. Louis). Portrait of a man in a suit with a woman in a dress wearing a necklace leaning her head on his shoulder. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprxf-cor.
APA, 6th edition
Ellis (St. Louis). (unknown)[Portrait of a man in a suit with a woman in a dress wearing a necklace leaning her head on his shoulder]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprxf-cor.
Chicago
Ellis (St. Louis), Portrait of a man in a suit with a woman in a dress wearing a necklace leaning her head on his shoulder, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprxf-cor.