Ronald L. Eisenberg, Jewish Traditions: A JPS Guide, Jewish Publication Society, 2010, ISBN 0827610394p. 286
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Walker, Norman Wardhaugh (1970年). “Cos or Romaine Lettuce Juice”. Fresh Vegetable and Fruit Juices: What's Missing in Your Body?. Book Publishing Company. 2 December 2013閲覧。
Tooke, William. The Monarchy of France: its rise, progress, and fall, p. 634