MLA
African American Man Wearing a Suit and Hat, Sitting on a Chair, with an African American Girl Wearing a Dress and Bow in Her Hair, Standing next to Him. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/337vmcvdqn-cor.
APA, 6th edition
African American man wearing a suit and hat, sitting on a chair, with an African American girl wearing a dress and bow in her hair, standing next to him (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/337vmcvdqn-cor.
Chicago
“African American Man Wearing a Suit and Hat, Sitting on a Chair, with an African American Girl Wearing a Dress and Bow in Her Hair, Standing next to Him.” 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/337vmcvdqn-cor.