MLA
Studio., Maxwell. Portrait of an African American Man in a Suit with Gloves and Rolled Paper in Left Hand and Cane in Right Hand. 1920. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 17. https://digital.library.emory.edu/purl/682k6djhj6-cor.
APA, 6th edition
Studio., M. (1920). Portrait of an African American man in a suit with gloves and rolled paper in left hand and cane in right hand (Box 17) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/682k6djhj6-cor.
Chicago
Studio., Maxwell. “Portrait of an African American Man in a Suit with Gloves and Rolled Paper in Left Hand and Cane in Right Hand.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, 1920. Box 17. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/682k6djhj6-cor.