MLA
Willcox, J. C. Letter from J. C. Willcox (Madison, Florida) to J. J. Daniel (Commander of Conscripts for the State of Florida). Willcox Commanded Company B of Munnerlyns Battalion - November 15, 1864 (Copy). 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 29. https://digital.library.emory.edu/purl/105s7h45ks-cor.
APA, 6th edition
Willcox, J. C. (1864). Letter from J. C. Willcox (Madison, Florida) to J. J. Daniel (Commander of Conscripts for the State of Florida). Willcox commanded Company B of Munnerlyns Battalion - November 15, 1864 (copy) (Box 7, Folder 29) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/105s7h45ks-cor.
Chicago
Willcox, J. C. “Letter from J. C. Willcox (Madison, Florida) to J. J. Daniel (Commander of Conscripts for the State of Florida). Willcox Commanded Company B of Munnerlyns Battalion - November 15, 1864 (Copy).” Letters (correspondence). Civil War Collection, 1864. Box 7, Folder 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/105s7h45ks-cor.