MLA
Rector, Henry M. (Henry Massey), 1816-1899. Document certifying the appointment of Robert W. Johnson and Charles B. Mitchel as Confederate States senators for Arkansas, signed by Henry Massey Rector (Little Rock, Arkansas), November 9, 1861. November 9, 1861. Civil War Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4zj6-cor.
APA, 6th edition
Rector, Henry M. (Henry Massey), 1816-1899. (November 9, 1861)[Document certifying the appointment of Robert W. Johnson and Charles B. Mitchel as Confederate States senators for Arkansas, signed by Henry Massey Rector (Little Rock, Arkansas), November 9, 1861]. Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4zj6-cor.
Chicago
Rector, Henry M. (Henry Massey), 1816-1899, Document certifying the appointment of Robert W. Johnson and Charles B. Mitchel as Confederate States senators for Arkansas, signed by Henry Massey Rector (Little Rock, Arkansas), November 9, 1861, November 9, 1861, Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/030prr4zj6-cor.