MLA
Commission for Oliver S. Johnson as 1st Lieutenant in the 8th New Jersey Infantry Regiment, Company C, Signed by Charles Smith Olden, Governor of New Jersey. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19, Folder 39. https://digital.library.emory.edu/purl/549g4f4rx7-cor.
APA, 6th edition
Commission for Oliver S. Johnson as 1st Lieutenant in the 8th New Jersey Infantry Regiment, Company C, signed by Charles Smith Olden, Governor of New Jersey (Box 19, Folder 39). (1861). [Military commissions]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4rx7-cor.
Chicago
“Commission for Oliver S. Johnson as 1st Lieutenant in the 8th New Jersey Infantry Regiment, Company C, Signed by Charles Smith Olden, Governor of New Jersey.” Military commissions. Civil War Collection, 1861. Box 19, Folder 39. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4rx7-cor.