MLA
Note Granting a Leave of Absence to Colonel R. G. Earle for Seven Days, Signed by S. W. Ferguson, Virginia Cavalry Brigade - May 7, 1864 : Promissory Note for Eight Dollars from R. G. Earle to T. R. Williams - June 18, 1861 (Photocopy). 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3, Folder 13. https://digital.library.emory.edu/purl/542n5tb3rh-cor.
APA, 6th edition
Note granting a leave of absence to Colonel R. G. Earle for seven days, signed by S. W. Ferguson, Virginia Cavalry Brigade - May 7, 1864 : Promissory note for eight dollars from R. G. Earle to T. R. Williams - June 18, 1861 (photocopy) (Box 3, Folder 13). (1861). [Documents (object genre)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb3rh-cor.
Chicago
“Note Granting a Leave of Absence to Colonel R. G. Earle for Seven Days, Signed by S. W. Ferguson, Virginia Cavalry Brigade - May 7, 1864 : Promissory Note for Eight Dollars from R. G. Earle to T. R. Williams - June 18, 1861 (Photocopy).” Documents (object genre). Civil War Collection, 1861. Box 3, Folder 13. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb3rh-cor.