MLA
Brent, George W. General Order No. 48, George W. Brent, Acting Chief of Staff, (Headquarters Western Department, Corinth) by Command of General Beauregard Regarding Care of Wounded Soldiers - May 20, 1862. 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 36. https://digital.library.emory.edu/purl/064tht77hn-cor.
APA, 6th edition
Brent, G. W. (1862). General Order No. 48, George W. Brent, acting chief of staff, (Headquarters Western Department, Corinth) by command of General Beauregard regarding care of wounded soldiers - May 20, 1862 (Box 1, Folder 36) [Orders (military records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/064tht77hn-cor.
Chicago
Brent, George W. “General Order No. 48, George W. Brent, Acting Chief of Staff, (Headquarters Western Department, Corinth) by Command of General Beauregard Regarding Care of Wounded Soldiers - May 20, 1862.” Orders (military records). Civil War Collection, 1862. Box 1, Folder 36. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/064tht77hn-cor.