William Cowper, James Thomson (1832). “The Works of Cowper and Thompson: Including Many Letters and Poems Never Before Published in this Country. With a New and Interesting Memoir of the Life of Thomson”, p.118
Alexander Pope (1820). “An Essay on Man: In Four Epistles to H. St. John Lord Bolinbroke. To which are Added the Universal Prayer, Messiah, and Elegy”, p.7