MLA
Pardon Issued by President Andrew Johnson for Former Confederate, R. D. Arnold of Savannah, Georgia. 1865. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP34, Folder 4. https://digital.library.emory.edu/purl/0278sf7n86-cor.
APA, 6th edition
Pardon issued by President Andrew Johnson for former Confederate, R. D. Arnold of Savannah, Georgia (OP34, Folder 4). (1865). [Pardons]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0278sf7n86-cor.
Chicago
“Pardon Issued by President Andrew Johnson for Former Confederate, R. D. Arnold of Savannah, Georgia.” Pardons. Civil War Collection, 1865. OP34, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0278sf7n86-cor.