David Hume (1826). “The Philosophical Works: Including All the Essays, and Exhibiting the More Important Alterations and Corrections in the Successive Ed. Publ. by the Author”, p.232
David Hume, Eric Steinberg (1993). “An Enquiry Concerning Human Understanding ; [with] A Letter from a Gentleman to His Friend in Edinburgh ; [and] An Abstract of a Treatise of Human Nature”, p.71, Hackett Publishing
David Hume, Tom L. Beauchamp (2007). “A Dissertation on the Passions: The Natural History of Religion : a Critical Edition”, p.112, Oxford University Press