Fitz Hugh Ludlow (1870). “The Heart of the Continent: A Record of Travel Across the Plains and in Oregon, with an Examination of the Mormon Principle”, p.409, New York : Hurd and Houghton ; Cambridge : Riverside Press
Ralph Cudworth (1820). “The True Intellectual System of the Universe: Wherein All the Reason and Philosophy of Atheism is Confuted, and Its Impossibility Demonstrated”, p.322