MLA
Spencer, Thomas. Confederate Medicine, 15-Page Sketch of the Medical Department of the Confederate States of America Giving Statistics about Doctors and Patients Treated This Article Was Compiled by Thomas Spencer with the Aid of Eight Diaries from Which He Gives Several Quotes. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 9, Folder 32. https://digital.library.emory.edu/purl/590dv41pw8-cor.
APA, 6th edition
Spencer, T. (1940). Confederate Medicine, 15-page sketch of the Medical Department of the Confederate States of America giving statistics about doctors and patients treated This article was compiled by Thomas Spencer with the aid of eight diaries from which he gives several quotes (Box 9, Folder 32) [Essays]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/590dv41pw8-cor.
Chicago
Spencer, Thomas. “Confederate Medicine, 15-Page Sketch of the Medical Department of the Confederate States of America Giving Statistics about Doctors and Patients Treated This Article Was Compiled by Thomas Spencer with the Aid of Eight Diaries from Which He Gives Several Quotes.” Essays. Civil War Collection, 1940. Box 9, Folder 32. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/590dv41pw8-cor.