MLA
Confederate General Ambrose Powell Hill Jr. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 16, Folder 31. https://digital.library.emory.edu/purl/897kprr5n5-cor.
APA, 6th edition
Confederate general Ambrose Powell Hill Jr. (Box 16, Folder 31). (1861). [Cartes-de-visite (card photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr5n5-cor.
Chicago
“Confederate General Ambrose Powell Hill Jr.” Cartes-de-visite (card photographs). Civil War Collection, 1861. Box 16, Folder 31. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr5n5-cor.