MLA
Wesley, Sarah, 1759-1828. Letter from Sarah Wesley to [Sarah (Gwynne)] Wesley, Rochester - August 11, 1801. August 11, 1801. Wesleyana Collection. Pitts Theology Library. https://digital.library.emory.edu/purl/030prr4z0z-cor.
APA, 6th edition
Wesley, Sarah, 1759-1828. (August 11, 1801)[Letter from Sarah Wesley to [Sarah (Gwynne)] Wesley, Rochester - August 11, 1801]. Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/030prr4z0z-cor.
Chicago
Wesley, Sarah, 1759-1828, Letter from Sarah Wesley to [Sarah (Gwynne)] Wesley, Rochester - August 11, 1801, August 11, 1801, Wesleyana Collection, Pitts Theology Library. https://digital.library.emory.edu/purl/030prr4z0z-cor.