John Bunyan, George Offor (1862). “The Whole Works of John Bunyan: Accurately Reprinted from the Authors Own Editions ; Wth Editorial Prefaces, Notes, and Life of Bunyan”, p.134
George Whitefield (1828). “Sermons on important subjects ... With a memoir of the Author by S. Drew; and a dissertation on his character, preaching, etc., by Joseph [or rather Josiah] Smith”, p.550