MLA
African American Boys and Girls Posing in Front of a Group of Palms in Florida. 1915. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/375dbrv174-cor.
APA, 6th edition
African American boys and girls posing in front of a group of palms in Florida (Box 72). (1915). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv174-cor.
Chicago
“African American Boys and Girls Posing in Front of a Group of Palms in Florida.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1915. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/375dbrv174-cor.