MLA
Childs, A. O. Receipt to William H. Scott, Sr. from A. O. Childs, September 1, 1892. 1892. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 9. https://digital.library.emory.edu/purl/293gxd26kg-cor.
APA, 6th edition
Childs, A. O. (1892). Receipt to William H. Scott, Sr. from A. O. Childs, September 1, 1892 (Box 1, Folder 9) [Receipts (financial records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/293gxd26kg-cor.
Chicago
Childs, A. O. “Receipt to William H. Scott, Sr. from A. O. Childs, September 1, 1892.” Receipts (financial records). William H. Scott Family Papers, 1848-1982, 1892. Box 1, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/293gxd26kg-cor.