MLA
Brothers, Lane. Students, Groups, 1940s-1950s - Students Voting. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 18, Folder 5. https://digital.library.emory.edu/purl/030prr4z8z-cor.
APA, 6th edition
Brothers, L. (1940). Students, groups, 1940s-1950s - Students voting (Box 18, Folder 5) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4z8z-cor.
Chicago
Brothers, Lane. “Students, Groups, 1940s-1950s - Students Voting.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 2 , 1940. Box 18, Folder 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4z8z-cor.