MLA
Wesley, John, 1703-1791. Letter from John Wesley to Ebenezer Blackwell, Epworth, England - April 16, 1752. 1931. Wesleyana Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/85370rxwz6-cor.
APA, 6th edition
Wesley, John, 1703-1791. (1931)[Letter from John Wesley to Ebenezer Blackwell, Epworth, England - April 16, 1752]. Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/85370rxwz6-cor.
Chicago
Wesley, John, 1703-1791, Letter from John Wesley to Ebenezer Blackwell, Epworth, England - April 16, 1752, 1931, Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/85370rxwz6-cor.