1. Encyclopedia The Columbia Encyclopedia, Sixth Edition, 2007. Page 21443
2. Marijuana Book by Erich Goode; Atherton, 1969 Page 6
3. Marihuana Reconsidered Lester Grinspoon, Harvard University Press, 1971 Page 291-291
4. U.S. faces life-or-death decision on Hussein fate Chicago Sun-Times February 24, 1991 Alan C. Miller
5. The Shahids: Islam and Suicide Attacks.(Book review) Middle East Quarterly March 22, 2006 Mansur, Salim)
6. Stairways to Heaven: Drugs in American Religious History, Robert C. Fuller; Westview Press, 2000 Page 140