MLA
Four Officers of the 43rd General Hospital Unit Playing Checkers. 1942. Robert W. Woodruff Health Sciences Center. Library, Box 2, Folder 2. https://digital.library.emory.edu/purl/0343r229cd-cor.
APA, 6th edition
Four officers of the 43rd General Hospital unit playing checkers (Box 2, Folder 2). (1942). [Black-and-white photographs]. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/0343r229cd-cor.
Chicago
“Four Officers of the 43rd General Hospital Unit Playing Checkers.” Black-and-white photographs. Emory Unit Collection, 1942. Box 2, Folder 2. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/0343r229cd-cor.