Wolfgang Mieder, Winston Churchill (1995). “The Proverbial Winston S. Churchill: An Index to Proverbs in the Works of Sir Winston Churchill”, Westport, Conn. : Greenwood Press
Arthur Guiterman (1924). “A Poet's Proverbs: Being Mirthful, Sober, and Fanciful Epigrams on the Universe, with Certain Old Irish Proverbs, All in Rhymed Complets”, New York, E.P. Dutton [1924]