Elizabeth Gurney Fry, Katharine Fry, Rachel Elizabeth Cresswell (1847). “Memoir of the Life of Elizabeth Fry: With Extracts from Her Letters and Journal”, p.307
Charles Haddon Spurgeon (1988). “Spurgeon at His Best: Over 2200 Striking Quotations from the World's Most Exhaustive and Widely-read Sermon Series”, Baker Publishing Group