* Aromatherapie in Wissenschaft und Praxis. Ed. Wolfgang Steflitsch. Stadelmann, 2013
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  * British Herbal Pharmacopoeia [BHP83]
  * CRC Handbook of Medicinal Herbs 1985 [CRC]
  * Food Plants of the World. Van Wyk, Ben-Erik Portland Oregon 2005 [FPW] 
  * Herbal Drugs and Phytopharmaceuticals 2009 [Wichtl] 
  * Meaningful Scents around the World, Roman Kaiser, Zürich 2006 [MSW]
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  * Scent of the Vanishing Flora, Roman Kaiser, 2010 [SVF]
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