1. Clifford MN: Miscellaneous phenols in foods and beverages – nature, occurrence and dietary burden J Sci Food Agric. 2000;80:1126-1137.
  2. Max Witchl, Robert Anton (2003). Plantes thérapeutiques: tradition, pratique officinale, science et thérapeutique (2nd ed.). Tec & doc Éd. médicales internationales. [ISBN:978-2-7430-0631-0 ]
  3. Dr. Duke's Phytochemical and Ethnobotanical Databases [Link]