MLA
Berry, William, 1781-1879. Two letters from William Berry (McDonough, Georgia) to his children, written during the Civil War (typescript). between 1861 and 1865. Civil War Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573p69-cor.
APA, 6th edition
Berry, William, 1781-1879. (between 1861 and 1865)[Two letters from William Berry (McDonough, Georgia) to his children, written during the Civil War (typescript)]. Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573p69-cor.
Chicago
Berry, William, 1781-1879, Two letters from William Berry (McDonough, Georgia) to his children, written during the Civil War (typescript), between 1861 and 1865, Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573p69-cor.