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.549, e-artnow
Socrates, Plato, Aristotle (1967). “Wit and Wisdom of Socrates, Plato, Aristotle: Being a Treasury of Thousands of Glorious, Inspiring and Imperishable Thoughts, Views and Observations of the Three Great Greek Philosophers, Classified Under about Four Hundred Subjects for Comparative Study”
Francis Quarles (1844). “Enchiridion Institutions, Essays and Maxims, political, moral & divine. Divided into four centuries. By Francis Quarles”, p.53
Ellen Anderson Gholson Glasgow, Pamela R. Matthews (2005). “Perfect Companionship: Ellen Glasgow's Selected Correspondence with Women”, p.232, University of Virginia Press