John Locke (1714). “The Works of John Locke Esq: In Three Volumes. The Contents of which Follow in the Next Leaf. With Alphabetical Tables. ...”, p.228
John Locke (1824). “The Works of John Locke: The reasonableness of Christianity. A vindication of the Reasonableness of Christianity, from Mr. Edward's reflections. A second vindication”, p.232
William Law (2001). “A Serious Call to a Devout and Holy Life, adapted to the State and Condition of all Orders of Christians, Volume 4”, p.34, Wipf and Stock Publishers