MLA
African American Man in a Suit, Standing next to an African American Woman Wearing a Hat, While Holding Another Hat and a Stick. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/668x95x6d7-cor.
APA, 6th edition
African American man in a suit, standing next to an African American woman wearing a hat, while holding another hat and a stick (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/668x95x6d7-cor.
Chicago
“African American Man in a Suit, Standing next to an African American Woman Wearing a Hat, While Holding Another Hat and a Stick.” 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/668x95x6d7-cor.