MLA
Dabney, Robert Lewis, 1820-1898. A memorial of Lieut. Colonel John T. Thornton, of the Third Virginia Cavalry, C.S.A.. 1864. Civil War Imprints. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0687h44n5n-cor.
APA, 6th edition
Dabney, Robert Lewis, 1820-1898. (1864)[A memorial of Lieut. Colonel John T. Thornton, of the Third Virginia Cavalry, C.S.A.]. Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0687h44n5n-cor.
Chicago
Dabney, Robert Lewis, 1820-1898, A memorial of Lieut. Colonel John T. Thornton, of the Third Virginia Cavalry, C.S.A., 1864, Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0687h44n5n-cor.