MLA
Longstreet, Augustus Baldwin, 1790-1870. Master William Mitten, or, A youth of brilliant talent, who was ruined by bad luck. 1864. Civil War Imprints. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdrxf-cor.
APA, 6th edition
Longstreet, Augustus Baldwin, 1790-1870. (1864)[Master William Mitten, or, A youth of brilliant talent, who was ruined by bad luck]. Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdrxf-cor.
Chicago
Longstreet, Augustus Baldwin, 1790-1870, Master William Mitten, or, A youth of brilliant talent, who was ruined by bad luck, 1864, Civil War Imprints, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/798mcvdrxf-cor.