Heinrich Heine (1859). “The Poems of Heine, complete: Translated in the original Metres: With a Sketch of Heine's Life. By Edgar Alfred Bowring”, p.168
Robert Burns (1819). “The Prose Works of Robert Burns: Containing His Letters and Correspondence, Literary and Critical, and Amatory Epistles Including Letters to Clarinda, &c., &c”, p.215