MLA
Northup, Solomon, 1808-1863?. Twelve years a slave : narrative of Solomon Northup, a citizen of New-York, kidnapped in Washington City in 1841, and rescued in 1853, from a cotton plantation near the Red River, in Louisiana.. 1854. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573qps-cor.
APA, 6th edition
Northup, Solomon, 1808-1863?. (1854)[Twelve years a slave : narrative of Solomon Northup, a citizen of New-York, kidnapped in Washington City in 1841, and rescued in 1853, from a cotton plantation near the Red River, in Louisiana.]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573qps-cor.
Chicago
Northup, Solomon, 1808-1863?, Twelve years a slave : narrative of Solomon Northup, a citizen of New-York, kidnapped in Washington City in 1841, and rescued in 1853, from a cotton plantation near the Red River, in Louisiana., 1854, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/402q573qps-cor.