Ebenezer Erskine (1798). “The whole works of the late Rev. Mr. Ebenezer Erskine, minister of the gospel at Stirling: consisting of sermons and discourses, on the most important and interesting subjects”, p.108
John Bunyan (1851). “Christian Behaviour: A Holy Life, the Beauty of Christianity, the Fear of God, and an Exhortation to Unity and Peace to which is Added a Caution Against Sin”, p.322