MLA
Royels, Eugene A. African American Girl, Sitting on a Table While Holding Flowers. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/153jwstqmb-cor.
APA, 6th edition
Royels, E. A. African American girl, sitting on a table while holding flowers (Box 72) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/153jwstqmb-cor.
Chicago
Royels, Eugene A. “African American Girl, Sitting on a Table While Holding Flowers.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/153jwstqmb-cor.