William Law (1749). “I. The spirit of prayer; or, the soul rising out of the vanity of time, into the riches of eternity. In two parts ; 7,II. The way to divine knowledge; being several dialogues between Humanus, Academicus, Rusticus, and Theophilus”, p.47
William Law (1802). “A Serious Call to a Devout and Holy Life: Adapted to the State and Condition of All Orders of Christians, to which is Added Some Account of the Author and Three Letters to a Friend”, p.24
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.200, Wipf and Stock Publishers
William Law (1749). “I. The spirit of prayer; or, the soul rising out of the vanity of time, into the riches of eternity. In two parts ; 7,II. The way to divine knowledge; being several dialogues between Humanus, Academicus, Rusticus, and Theophilus”, p.4