MLA
Martyn. Engraving of "Rev. John Wesley, MA: Late Fellow of Lincoln College, Oxford". 1791. Pitts Theology Library, Box 2, Folder I95-001-018. https://digital.library.emory.edu/purl/5977sqvb9z-cor.
APA, 6th edition
M. (1791). Engraving of "Rev. John Wesley, MA: Late Fellow of Lincoln College, Oxford" (Box 2, Folder I95-001-018) [Engravings (prints)]. Pitts Theology Library. https://digital.library.emory.edu/purl/5977sqvb9z-cor.
Chicago
Martyn. “Engraving of ‘Rev. John Wesley, MA: Late Fellow of Lincoln College, Oxford.’” Engravings (prints). Wesleyana Collection, 1791. Box 2, Folder I95-001-018. Pitts Theology Library. https://digital.library.emory.edu/purl/5977sqvb9z-cor.