MLA
Group of Boys and Young Men Eating Watermelon at a Sawmill in Quincy, Illinois. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5. https://digital.library.emory.edu/purl/0580k6djn5-cor.
APA, 6th edition
Group of boys and young men eating watermelon at a sawmill in Quincy, Illinois (Box 5). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0580k6djn5-cor.
Chicago
“Group of Boys and Young Men Eating Watermelon at a Sawmill in Quincy, Illinois.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0580k6djn5-cor.