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
George MacDonald (2015). “THOMAS WINGFOLD, CURATE + PAUL FABER, SURGEON + THERE AND BACK - The Complete Series: The Curate's Awakening, The Lady's Confession & The Baron's Apprenticeship”, p.676, e-artnow