MLA
Georgia. Confederate States of America Currency - State of Georgia (Milledgeville, Georgia): $20 Dollar Bill - Issued April 6, 1864. 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 13, Folder 19. https://digital.library.emory.edu/purl/798mcvdph5-cor.
APA, 6th edition
G. (1864). Confederate States of America Currency - State of Georgia (Milledgeville, Georgia): $20 dollar bill - Issued April 6, 1864 (Box 13, Folder 19) [Paper money]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdph5-cor.
Chicago
Georgia. “Confederate States of America Currency - State of Georgia (Milledgeville, Georgia): $20 Dollar Bill - Issued April 6, 1864.” Paper money. Civil War Collection, 1864. Box 13, Folder 19. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdph5-cor.