MLA
Davis, Robert F. Diary of Robert F. Davis (Company E of the 7th Georgia Infantry Regiment), Vol. 3 - April 18, 1864 to May 2, 1865. 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 52. https://digital.library.emory.edu/purl/310jsxktm0-cor.
APA, 6th edition
Davis, R. F. (1864). Diary of Robert F. Davis (Company E of the 7th Georgia Infantry Regiment), Vol. 3 - April 18, 1864 to May 2, 1865 (Box 2, Folder 52) [Diaries]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/310jsxktm0-cor.
Chicago
Davis, Robert F. “Diary of Robert F. Davis (Company E of the 7th Georgia Infantry Regiment), Vol. 3 - April 18, 1864 to May 2, 1865.” Diaries. Civil War Collection, 1864. Box 2, Folder 52. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/310jsxktm0-cor.