Jalāl al-Dīn Rūmī (Maulana), Jelaluddin Rumi, Kabir Helminski, Andrew Harvey (2005). “The Rumi Collection: An Anthology of Translations of Mevlâna Jalâluddin Rumi”, p.28, Shambhala Publications
Henry Wadsworth Longfellow (1871). “The poetical works of Henry W. Longfellow, ed. with a critical memoir by W.M. Rossetti, illustr. by W. Lawson. Illustr. by E. Edwards”, p.173