Joseph Addison (1721). “Remarks on several parts of Italy , &c in the years 1701, 1702, 1703. The Tatler. By Isaac Bickerstaffe, esq. The Spectator, no.1-89”, p.442
Joseph Addison (1794). “Interesting Anecdotes, Memoirs, Allegories, Essays, and Poetical Fragments: Tending to Amuse the Fancy, and Inculcate Morality”, p.159