MLA
Pushball - Game with Crowd Looking On. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5, Folder 4. https://digital.library.emory.edu/purl/211kh189qn-cor.
APA, 6th edition
Pushball - Game with crowd looking on (Box 5, Folder 4). (1940). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/211kh189qn-cor.
Chicago
“Pushball - Game with Crowd Looking On.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1940. Box 5, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/211kh189qn-cor.