MLA
Wesley, Sarah, 1759-1828. Letter from Sarah Wesley to Sarah (Gwynne) Wesley, Dover - September 8, 1798. September 8, 1798. Wesleyana Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/344pk0p34r-cor.
APA, 6th edition
Wesley, Sarah, 1759-1828. (September 8, 1798)[Letter from Sarah Wesley to Sarah (Gwynne) Wesley, Dover - September 8, 1798]. Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/344pk0p34r-cor.
Chicago
Wesley, Sarah, 1759-1828, Letter from Sarah Wesley to Sarah (Gwynne) Wesley, Dover - September 8, 1798, September 8, 1798, Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/344pk0p34r-cor.