William Cowper (1855). “The Works of William Cowper: His Life, Letters, and Poems : Now First Completed by the Introduction of Cowper's Private Correspondence”, p.594
John Woolman (1837). “A Journal of the Life, Gospel Labours, and Christian Experiences, of that Faithful Minister of Jesus Christ, John Woolman”, p.171
Leo Burnett (1961). “Communications of an Advertising Man: Selections from the Speeches, Articles, Memoranda, and Miscellaneous Writings of Leo Burnett”
Mahatma Gandhi (1965). “Glorious Thoughts of Gandhi: Being a Treasury of about Ten Thousand Valuable and Inspiring Thougths of Mahatma Gandhi, Classified Under Four Hundred Subjects”