MLA
Davis, J. Lucius (James Lucius). The trooper's manual, or, Tactics for light dragoons and mounted riflemen. 1862. Civil War Imprints. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq2xj-cor.
APA, 6th edition
Davis, J. Lucius (James Lucius). (1862)[The trooper's manual, or, Tactics for light dragoons and mounted riflemen, 3rd edition.]. Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq2xj-cor.
Chicago
Davis, J. Lucius (James Lucius), The trooper's manual, or, Tactics for light dragoons and mounted riflemen, 1862, Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq2xj-cor.