MLA
Wesley, Charles, D.D., 1793-1859. Letter from Charles Wesley D.D. to George Roland, St. James Palace [London] - May 29, 1849. May 29, 1840. Wesleyana Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/4472v6wx6n-cor.
APA, 6th edition
Wesley, Charles, D.D., 1793-1859. (May 29, 1840)[Letter from Charles Wesley D.D. to George Roland, St. James Palace [London] - May 29, 1849]. Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/4472v6wx6n-cor.
Chicago
Wesley, Charles, D.D., 1793-1859, Letter from Charles Wesley D.D. to George Roland, St. James Palace [London] - May 29, 1849, May 29, 1840, Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/4472v6wx6n-cor.