MLA
Cornett, George. Students, Groups, 1940s-1950s - Student Studying at Desk. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19, Folder 2. https://digital.library.emory.edu/purl/5870vt4c26-cor.
APA, 6th edition
Cornett, G. (1940). Students, groups, 1940s-1950s - Student studying at desk (Box 19, Folder 2) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/5870vt4c26-cor.
Chicago
Cornett, George. “Students, Groups, 1940s-1950s - Student Studying at Desk.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 2 , 1940. Box 19, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/5870vt4c26-cor.