MLA
Duncan, Bob. Business School - Winners of the "Business Games". 1964. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8, Folder 2. https://digital.library.emory.edu/purl/351hhmgr9q-cor.
APA, 6th edition
Duncan, B. (1964). Business School - Winners of the "business games" (Box 8, Folder 2) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/351hhmgr9q-cor.
Chicago
Duncan, Bob. “Business School - Winners of the ‘Business Games.’” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1964. Box 8, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/351hhmgr9q-cor.