MLA
Fraternities, Sigma Delta Chi - Robert Sommerville, Allen Gosnell, Atlanta Mayor William Hartsfield, and Raymond B. Nixon. 1942. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 16, Folder 11. https://digital.library.emory.edu/purl/136h1893t9-cor.
APA, 6th edition
Fraternities, Sigma Delta Chi - Robert Sommerville, Allen Gosnell, Atlanta mayor William Hartsfield, and Raymond B. Nixon (Box 16, Folder 11). (1942). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/136h1893t9-cor.
Chicago
“Fraternities, Sigma Delta Chi - Robert Sommerville, Allen Gosnell, Atlanta Mayor William Hartsfield, and Raymond B. Nixon.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 1, 1942. Box 16, Folder 11. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/136h1893t9-cor.