MLA
Word., Last. Two African American Men with a Donkey Pulling a Two-Wheeled Cart. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3. https://digital.library.emory.edu/purl/624jm63xzb-cor.
APA, 6th edition
Word., L. Two African American men with a donkey pulling a two-wheeled cart (Box 3) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/624jm63xzb-cor.
Chicago
Word., Last. “Two African American Men with a Donkey Pulling a Two-Wheeled Cart.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/624jm63xzb-cor.