Rujukan Dadah psikoaktif

  1. ↑ "CHAPTER 1 Alcohol and Other Drugs". ISBN 0-7245-3361-3 https://web.archive.org/web/20150328060739/http://www.nt.gov.au/health/healthdev/health_promotion/bushbook/volume2/chap1/sect1.htm. Diarkibkan daripada asal pada 2015-03-28.  Missing or empty |title= (bantuan)
  2. ↑ Early Holocene coca chewing in northern Peru Volume: 84 Number: 326 Page: 939–953
  3. ↑ "Coca leaves first chewed 8,000 years ago, says research". BBC News. December 2, 2010. Diarkibkan daripada yang asal pada May 23, 2014. 
  4. ↑ Merlin, M.D (2003). "Archaeological Evidence for the Tradition of Psychoactive Plant Use in the Old World". Economic Botany. 57 (3): 295–323. doi:10.1663/0013-0001(2003)057[0295:AEFTTO]2.0.CO;2. 
  5. ↑ Siegel, Ronald K (2005). Intoxication: The Universal Drive for Mind-Altering Substances. Park Street Press, Rochester, Vermont. ISBN 1-59477-069-7. 
  6. ↑ Weil, Andrew (2004). The Natural Mind: A Revolutionary Approach to the Drug Problem (Revised edition). Houghton Mifflin. m/s. 15. ISBN 0-618-46513-8. 

Rujukan

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