MLA
Johnston, J. H. Document from J. H. Johnston (Coweta County, Georgia) Emancipating Slaves and Agreement for Their Living Arrangements until the End of the Year. 1865. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 4, Folder 18. https://digital.library.emory.edu/purl/863fxpnwz5-cor.
APA, 6th edition
Johnston, J. H. (1865). Document from J. H. Johnston (Coweta County, Georgia) emancipating slaves and agreement for their living arrangements until the end of the year (Box 4, Folder 18) [Documents (object genre)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/863fxpnwz5-cor.
Chicago
Johnston, J. H. “Document from J. H. Johnston (Coweta County, Georgia) Emancipating Slaves and Agreement for Their Living Arrangements until the End of the Year.” Documents (object genre). Civil War Collection, 1865. Box 4, Folder 18. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/863fxpnwz5-cor.