MLA
Elliott, Robert B. General Order No. 27 Written by Robert B. Elliott, Headquarters, Military District (Savannah, Georgia) Regarding the Court Martial of Private Charles Haygood, 1st Regiment Georgia Regulars, for Stealing and Then Selling a Blanket to a "Negro". 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3, Folder 19. https://digital.library.emory.edu/purl/170msbcd12-cor.
APA, 6th edition
Elliott, R. B. (1861). General Order No. 27 written by Robert B. Elliott, Headquarters, Military District (Savannah, Georgia) regarding the court martial of Private Charles Haygood, 1st Regiment Georgia Regulars, for stealing and then selling a blanket to a "negro" (Box 3, Folder 19) [Orders (military records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcd12-cor.
Chicago
Elliott, Robert B. “General Order No. 27 Written by Robert B. Elliott, Headquarters, Military District (Savannah, Georgia) Regarding the Court Martial of Private Charles Haygood, 1st Regiment Georgia Regulars, for Stealing and Then Selling a Blanket to a ‘Negro.’” Orders (military records). Civil War Collection, 1861. Box 3, Folder 19. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcd12-cor.