MLA
Hand-Tinted Photograph on Cardboard of Confederate General Pierre Gustave Toutant-Beauregard and His Men on Horseback. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 16, Folder 6. https://digital.library.emory.edu/purl/030prr4z6c-cor.
APA, 6th edition
Hand-tinted photograph on cardboard of Confederate general Pierre Gustave Toutant-Beauregard and his men on horseback (Box 16, Folder 6). (1863). [Color photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4z6c-cor.
Chicago
“Hand-Tinted Photograph on Cardboard of Confederate General Pierre Gustave Toutant-Beauregard and His Men on Horseback.” Color photographs. Civil War Collection, 1863. Box 16, Folder 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4z6c-cor.