P. J. O'Rourke (2007). “All the Trouble in the World: The Lighter Side of Overpopulation, Famine, Ecological Disaster, Ethnic Hatred, Plague, and Poverty”, p.318, Grove/Atlantic, Inc.
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.590