MLA
Co., Albertype. Portrait of an African American Boy Wearing a Hat. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/10966t1g2n-cor.
APA, 6th edition
Co., A. Portrait of an African American boy wearing a hat (Box 72) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g2n-cor.
Chicago
Co., Albertype. “Portrait of an African American Boy Wearing a Hat.” 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/10966t1g2n-cor.