MLA
Ward, A. J. Letter from A. J. Ward to His Sisters, Lettia Mary and Jody, Discussing Family Matters and the Battle of Fredericksburg Which He Took Part in. Ward Was a Member of the 6th Regiment, Company C of General D. H. Hill's Division - December 8, 1863. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5, Folder 14. https://digital.library.emory.edu/purl/672b8gtjwz-cor.
APA, 6th edition
Ward, A. J. (1863). Letter from A. J. Ward to his sisters, Lettia Mary and Jody, discussing family matters and the battle of Fredericksburg which he took part in. Ward was a member of the 6th Regiment, Company C of General D. H. Hill's Division - December 8, 1863 (Box 5, Folder 14) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/672b8gtjwz-cor.
Chicago
Ward, A. J. “Letter from A. J. Ward to His Sisters, Lettia Mary and Jody, Discussing Family Matters and the Battle of Fredericksburg Which He Took Part in. Ward Was a Member of the 6th Regiment, Company C of General D. H. Hill's Division - December 8, 1863.” Letters (correspondence). Civil War Collection, 1863. Box 5, Folder 14. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/672b8gtjwz-cor.