MLA
Thornwell, James Henley, 1812-1862. Our danger and our duty. 1863. Civil War Imprints. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kh98-cor.
APA, 6th edition
Thornwell, James Henley, 1812-1862. (1863)[Our danger and our duty]. Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kh98-cor.
Chicago
Thornwell, James Henley, 1812-1862, Our danger and our duty, 1863, Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kh98-cor.