MLA
Tobie, Edward P. (Edward Parsons), 1838-. Service of the cavalry in the Army of the Potomac. 1882. Regimental Histories. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8708w9gp4g-cor.
APA, 6th edition
Tobie, Edward P. (Edward Parsons), 1838-. (1882)[Service of the cavalry in the Army of the Potomac]. Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8708w9gp4g-cor.
Chicago
Tobie, Edward P. (Edward Parsons), 1838-, Service of the cavalry in the Army of the Potomac, 1882, Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8708w9gp4g-cor.