MLA
Union Army Medal. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 21, Folder 3. https://digital.library.emory.edu/purl/6214mw6nfr-cor.
APA, 6th edition
Union army medal (Box 21, Folder 3). (1861). [Medals]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6214mw6nfr-cor.
Chicago
“Union Army Medal.” Medals. Civil War Collection, 1861. Box 21, Folder 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6214mw6nfr-cor.