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
William Cowper (1830). “Poems ... With a sketch of his life and a vindication of his religious principles and character. Third edition, corrected and enlarged. [With a portrait.]”, p.14