MLA
Oxford, PA : Billy : an African American Man with a Basket. 1907. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/156zw3r23w-cor.
APA, 6th edition
Oxford, PA : Billy : an African American man with a basket (Box 72). (1907). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/156zw3r23w-cor.
Chicago
“Oxford, PA : Billy : an African American Man with a Basket.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1907. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/156zw3r23w-cor.