MLA
Hargis, Othnel Polk. 25-Page Memoir, "Thrilling Experiences of a First Georgia Cavalryman in the Civil War" by O. P. Hargis. Hargis Joined the 1st Georgia Cavalry at Resaca, Georgia in May 1864 When He Was 15 Years Old. This Division, under Command of General Wheeler Acted as Skirmishers to Cover Johnson's Retreat from Resaca to Atlanta. Memoir Also Includes Some Background and Follow up on Hargis and His Family (Typescript). 1865. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8, Folder 32. https://digital.library.emory.edu/purl/0515mkkx4z-cor.
APA, 6th edition
Hargis, O. P. (1865). 25-page memoir, "Thrilling Experiences of a First Georgia Cavalryman in the Civil War" by O. P. Hargis. Hargis joined the 1st Georgia Cavalry at Resaca, Georgia in May 1864 when he was 15 years old. This Division, under command of General Wheeler acted as skirmishers to cover Johnson's retreat from Resaca to Atlanta. Memoir also includes some background and follow up on Hargis and his family (typescript) (Box 8, Folder 32) [Memoirs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0515mkkx4z-cor.
Chicago
Hargis, Othnel Polk. “25-Page Memoir, ‘Thrilling Experiences of a First Georgia Cavalryman in the Civil War’ by O. P. Hargis. Hargis Joined the 1st Georgia Cavalry at Resaca, Georgia in May 1864 When He Was 15 Years Old. This Division, under Command of General Wheeler Acted as Skirmishers to Cover Johnson's Retreat from Resaca to Atlanta. Memoir Also Includes Some Background and Follow up on Hargis and His Family (Typescript).” Memoirs. Civil War Collection, 1865. Box 8, Folder 32. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0515mkkx4z-cor.