MLA
Langston, John Mercer, 1829-1897. The patriot dead : oration. 1873. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8945qftvkf-cor.
APA, 6th edition
Langston, John Mercer, 1829-1897. (1873)[The patriot dead : oration]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8945qftvkf-cor.
Chicago
Langston, John Mercer, 1829-1897, The patriot dead : oration, 1873, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8945qftvkf-cor.