MLA
Leonard Harper Holding Gloves, a Cigarette and Cane. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 46. https://digital.library.emory.edu/purl/566j0zpcdc-cor.
APA, 6th edition
Leonard Harper holding gloves, a cigarette and cane (Box 46). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/566j0zpcdc-cor.
Chicago
“Leonard Harper Holding Gloves, a Cigarette and Cane.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 46. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/566j0zpcdc-cor.