MLA
Wesley, Charles, 1707-1788. Letter from Charles Wesley to John Langshaw, London - June 2, 1779 (1). 1993. Wesleyana Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/0171vhhn06-cor.
APA, 6th edition
Wesley, Charles, 1707-1788. (1993)[Letter from Charles Wesley to John Langshaw, London - June 2, 1779 (1)]. Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/0171vhhn06-cor.
Chicago
Wesley, Charles, 1707-1788, Letter from Charles Wesley to John Langshaw, London - June 2, 1779 (1), 1993, Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/0171vhhn06-cor.