MLA
Marriage Certificate of William H. Scott and Rachel A. Simpson, August 7, 1871. 1871. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 8. https://digital.library.emory.edu/purl/392g79cq63-cor.
APA, 6th edition
Marriage certificate of William H. Scott and Rachel A. Simpson, August 7, 1871 (Box 1, Folder 8). (1871). [Certificates]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/392g79cq63-cor.
Chicago
“Marriage Certificate of William H. Scott and Rachel A. Simpson, August 7, 1871.” Certificates. William H. Scott Family Papers, 1848-1982, 1871. Box 1, Folder 8. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/392g79cq63-cor.