William Cowper, Henry Stebbing (1869). “The Complete Poetical Works of William Cowper, Esq: Including the Hymns and Translations from Madame Guion, Milton, Etc. ; with a Memoir of the Author”, p.234
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.104