MLA
Military: Army - H. L. Arnold. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 24, Folder 6. https://digital.library.emory.edu/purl/1439zw3s1f-cor.
APA, 6th edition
Military: Army - H. L. Arnold (Box 24, Folder 6). (1940). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3s1f-cor.
Chicago
“Military: Army - H. L. Arnold.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 2 , 1940. Box 24, Folder 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3s1f-cor.