MLA
William Harris, an African American Cook, Wearing a Uniform and Hat. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/320sqv9s8k-cor.
APA, 6th edition
William Harris, an African American cook, wearing a uniform and hat (Box 70). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9s8k-cor.
Chicago
“William Harris, an African American Cook, Wearing a Uniform and Hat.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9s8k-cor.