MLA
Gladden A. H., Smith, and R. A. Autograph of R. A. Smith and the Signature of A. H. Gladden. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 9, Folder 30. https://digital.library.emory.edu/purl/7203xsj4z1-cor.
APA, 6th edition
Gladden A. H., S., & A., R. Autograph of R. A. Smith and the signature of A. H. Gladden (Box 9, Folder 30) [Autographs (manuscripts)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7203xsj4z1-cor.
Chicago
Gladden A. H., Smith, and R. A. “Autograph of R. A. Smith and the Signature of A. H. Gladden.” Autographs (manuscripts). Civil War Collection, n.d. Box 9, Folder 30. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7203xsj4z1-cor.