MLA
The Confederate States Almanac, and Repository of Useful Knowledge : for the Year 1864 : Being Bissextile or Leap Year, the Fourth of Southern Independence, and, until July 4th, the Eighty-Eighth of the Independence of the United States : Astronomical Calculations for the Latitude and Meridian of Augusta, Ga., and Richmond, Va. H.C. Clarke, publisher, 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/914nk98x06-cor.
APA, 6th edition
The Confederate States almanac, and repository of useful knowledge : for the year 1864 : being bissextile or leap year, the fourth of southern independence, and, until July 4th, the eighty-eighth of the independence of the United States : astronomical calculations for the latitude and meridian of Augusta, Ga., and Richmond, Va. (1863). [Almanacs, Southern imprint]. H.C. Clarke, publisher; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/914nk98x06-cor.
Chicago
“The Confederate States Almanac, and Repository of Useful Knowledge : for the Year 1864 : Being Bissextile or Leap Year, the Fourth of Southern Independence, and, until July 4th, the Eighty-Eighth of the Independence of the United States : Astronomical Calculations for the Latitude and Meridian of Augusta, Ga., and Richmond, Va.” Almanacs, Southern imprint. Civil War Imprints. Mobile, Ala.: H.C. Clarke, publisher, 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/914nk98x06-cor.