MLA
Hanging on : an African American Boy Hanging on to the Back of a Donkey. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/6451g1jww4-cor.
APA, 6th edition
Hanging on : an African American boy hanging on to the back of a donkey (Box 72). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jww4-cor.
Chicago
“Hanging on : an African American Boy Hanging on to the Back of a Donkey.” 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/6451g1jww4-cor.