MLA
New Biographical Series - No. 6, John Wesley. The Religious Tract Society, 1880. Pitts Theology Library, Box 40, Folder I95-001-220. https://digital.library.emory.edu/purl/921ghx3g07-cor.
APA, 6th edition
New Biographical Series - No. 6, John Wesley (Box 40, Folder I95-001-220). (1880). [Pamphlets]. The Religious Tract Society; Pitts Theology Library. https://digital.library.emory.edu/purl/921ghx3g07-cor.
Chicago
“New Biographical Series - No. 6, John Wesley.” Pamphlets. Wesleyana Collection. The Religious Tract Society, 1880. Box 40, Folder I95-001-220. Pitts Theology Library. https://digital.library.emory.edu/purl/921ghx3g07-cor.