MLA
Wayne, Henry C. (Henry Constantine), 1815-1883. Letter from Adjutant-General Henry Constantine Wayne to Johannes Nicolaus Hudtwalcker (Prussian Consulate in Savannah, Georgia) concerning the drafting of men under the protection of the Prussian consulate in Savannah - March 12, 1862. March 12, 1862. Civil War Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/849t1g1kxp-cor.
APA, 6th edition
Wayne, Henry C. (Henry Constantine), 1815-1883. (March 12, 1862)[Letter from Adjutant-General Henry Constantine Wayne to Johannes Nicolaus Hudtwalcker (Prussian Consulate in Savannah, Georgia) concerning the drafting of men under the protection of the Prussian consulate in Savannah - March 12, 1862]. Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/849t1g1kxp-cor.
Chicago
Wayne, Henry C. (Henry Constantine), 1815-1883, Letter from Adjutant-General Henry Constantine Wayne to Johannes Nicolaus Hudtwalcker (Prussian Consulate in Savannah, Georgia) concerning the drafting of men under the protection of the Prussian consulate in Savannah - March 12, 1862, March 12, 1862, Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/849t1g1kxp-cor.