MLA
Withers, John. Special Orders No. 259, Adjutant and Adjutant General's Office to President of the Union Manufacturing Company Signed by John Withers - October 31, 1864. 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 38. https://digital.library.emory.edu/purl/566j0zpd9j-cor.
APA, 6th edition
Withers, J. (1864). Special Orders No. 259, Adjutant and Adjutant General's Office to president of the Union Manufacturing Company signed by John Withers - October 31, 1864 (Box 7, Folder 38) [Orders (military records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/566j0zpd9j-cor.
Chicago
Withers, John. “Special Orders No. 259, Adjutant and Adjutant General's Office to President of the Union Manufacturing Company Signed by John Withers - October 31, 1864.” Orders (military records). Civil War Collection, 1864. Box 7, Folder 38. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/566j0zpd9j-cor.