William Cowper (1855). “The Complete Poetical Works of William Cowper: With Life, and Critical Notice of His Writings. Eight Engravings on Steel”, p.78
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.124