Tham khảo Quế

  1. ↑ Iqbal, Mohammed (1993). “International trade in non-wood forest products: An overview”. FO: Misc/93/11 - Working Paper. Food and Agriculture Organization of the United Nations. Truy cập ngày 12 tháng 11 năm 2012. 
  2. ↑ "Cassia, also known as cinnamon or Chinese cinnamon is a tree that has bark similar to that of cinnamon but with a rather pungent odour," remarks Maguelonne Toussant-Samat, Anthea Bell, tr. The History of Food, revised ed. 2009, p.437.
  3. ↑ Culinary Herbs and Spices, The Seasoning and Spice Association. Truy cập 2010-08-03.