MLA
Keiley, A. M. (Anthony M.), 1835-1905. Prisoner of war, or, Five months among the Yankees : being a narrative of the crosses, calamities, and consolations of a Petersburg militiaman during an enforced summer residence north. 1865. Civil War Imprints. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70w4k-cor.
APA, 6th edition
Keiley, A. M. (Anthony M.), 1835-1905. (1865)[Prisoner of war, or, Five months among the Yankees : being a narrative of the crosses, calamities, and consolations of a Petersburg militiaman during an enforced summer residence north]. Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70w4k-cor.
Chicago
Keiley, A. M. (Anthony M.), 1835-1905, Prisoner of war, or, Five months among the Yankees : being a narrative of the crosses, calamities, and consolations of a Petersburg militiaman during an enforced summer residence north, 1865, Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/924wh70w4k-cor.