MLA
Men in Hats Watching Four Other Men in a No-Hands Watermelon Eating Contest. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 11. https://digital.library.emory.edu/purl/453wstqjvv-cor.
APA, 6th edition
Men in hats watching four other men in a no-hands watermelon eating contest (Box 11). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjvv-cor.
Chicago
“Men in Hats Watching Four Other Men in a No-Hands Watermelon Eating Contest.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 11. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/453wstqjvv-cor.