MLA
Wesley, Charles, 1757-1834. Letter from Charles Wesley junior to John Bacon, Buckingham Street [London] - September 20, 1814. September 20, 1814. Wesleyana Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/9010p2nh06-cor.
APA, 6th edition
Wesley, Charles, 1757-1834. (September 20, 1814)[Letter from Charles Wesley junior to John Bacon, Buckingham Street [London] - September 20, 1814]. Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/9010p2nh06-cor.
Chicago
Wesley, Charles, 1757-1834, Letter from Charles Wesley junior to John Bacon, Buckingham Street [London] - September 20, 1814, September 20, 1814, Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/9010p2nh06-cor.