1007/s00213-006-0457-5. 引文使用过时参数coauthors (帮助)[永久失效連結] Rätsch, Christian; "The PsychoactivePlants, Ethnopharmacology and Its Applications"; Park Street Press; Rochester
Labate, Beatriz C. Plants, Psychoactive Substances and the International Narcotics Control Board: The Control of Nature and the Nature of Control (PDF). Human
(原始内容存档于2016-01-01). Palmer, Robert B. Medical toxicology of drug abuse : synthesized chemicals and psychoactiveplants. Hoboken, N.J.: John Wiley & Sons. 2012: 139
Development of Cambodia. [2017-07-16]. (原始内容存档于2018-07-21). Article 2 : Except for the cases of the article 14, the cultivation of opium poppy, cocoa plants, cannabis