Samuel Taylor Coleridge (1854). “The complete works of Samuel Taylor Coleridge: With an introductory essay upon his philosophical and theological opinions”, p.281
Alfred Lord Tennyson, Walt Whitman (2010). “English Poetry III: Tennyson to Whitman: The Five Foot Shelf of Classics, Vol. XLII (in 51 Volumes)”, p.1039, Cosimo, Inc.