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2. Battie, William, “A Treatise on Madness [1758]” in Patterns of Madness in the Eighteenth Century: A Reader, ed. Allan Ingram (Liverpool: Liverpool University Press, 1998): 112–119.
3. Botting, Fred, The Gothic (Cambridge: D.S. Brewer, 2001).
4. Cameron, Ed, “Matthew Lewis and the Gothic Horror of Obsessional Neurosis” in The Psychopathology of the Gothic Romance: Perversion, Neuroses and Psychosis in the Early Works of the Genre (Jefferson, North Carolina: McFarland & Co., 2010): 133–155.
5. Descartes, Renee, Descartes: Key Philosophical Writings (Ware: Wordsworth, 1997).