MLA
Order from Confederate General Gideon Pillow to Captain John T. Champney. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 12. https://digital.library.emory.edu/purl/40644j10mt-cor.
APA, 6th edition
Order from Confederate General Gideon Pillow to Captain John T. Champney (Box 2, Folder 12). (1861). [Orders (military records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j10mt-cor.
Chicago
“Order from Confederate General Gideon Pillow to Captain John T. Champney.” Orders (military records). Civil War Collection, 1861. Box 2, Folder 12. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j10mt-cor.