MLA
Military: Air Force ROTC - Weekly Quadrangle Retreat and Retiring of the Flag at Sunset. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 25, Folder 2. https://digital.library.emory.edu/purl/320sqv9t4g-cor.
APA, 6th edition
Military: Air Force ROTC - Weekly quadrangle retreat and retiring of the flag at sunset (Box 25, Folder 2). (1940). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9t4g-cor.
Chicago
“Military: Air Force ROTC - Weekly Quadrangle Retreat and Retiring of the Flag at Sunset.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 2 , 1940. Box 25, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/320sqv9t4g-cor.