MLA
Cook, Benjamin F., 1833-1915. History of the Twelfth Massachusetts Volunteers (Webster regiment). 1882. Regimental Histories. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70x50-cor.
APA, 6th edition
Cook, Benjamin F., 1833-1915. (1882)[History of the Twelfth Massachusetts Volunteers (Webster regiment)]. Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70x50-cor.
Chicago
Cook, Benjamin F., 1833-1915, History of the Twelfth Massachusetts Volunteers (Webster regiment), 1882, Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70x50-cor.