MLA
African American Boy Wearing a Hat, Standing next to Two African American Girls with Bows in Their Hair. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/569z08kptd-cor.
APA, 6th edition
African American boy wearing a hat, standing next to two African American girls with bows in their hair (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/569z08kptd-cor.
Chicago
“African American Boy Wearing a Hat, Standing next to Two African American Girls with Bows in Their Hair.” 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/569z08kptd-cor.