References: Tec, Nechama (P.H.D.) (1974). Marihuana and Other Illegal Drugs. International Journal of Social Psychiatry. 20(173). Retrieved August 18, 2009, from the University Library. McIntosh, J.; MacDonald, F.; McKeganey, N. (Nov. 2003). Knowledge and Perceptions of Illegal Drugs in a Sample of Pre-teenage Children. Drug: education, prevention and policy. Vol. 10; No. 4 (331-344). Retrieved August 18, 2009, from the University Library. McKeganey, N.; McIntosh, J.; MacDonald, F.; Gannon, M.; Gilvarry, E.; McArdle, P.; McCarthy, S. (Aug. 2004). Preteen Children and Illegal Drugs. Drugs: education, prevention and policy. Vol. 11; No. 4 (315-327). Retrieved August 18, 2009, from the University Library. U.S. DEA (2002). Drug Information. Retrieved August 18, 2009, from http://www.usdoj.gov/dea/concern/concern.htm. SAMHSA (2008). Signs of Drug Use. Retrieved August 18, 2009, from http://www.streetdrugs.org/signs1.htm
References: Tec, Nechama (P.H.D.) (1974). Marihuana and Other Illegal Drugs. International Journal of Social Psychiatry. 20(173). Retrieved August 18, 2009, from the University Library. McIntosh, J.; MacDonald, F.; McKeganey, N. (Nov. 2003). Knowledge and Perceptions of Illegal Drugs in a Sample of Pre-teenage Children. Drug: education, prevention and policy. Vol. 10; No. 4 (331-344). Retrieved August 18, 2009, from the University Library. McKeganey, N.; McIntosh, J.; MacDonald, F.; Gannon, M.; Gilvarry, E.; McArdle, P.; McCarthy, S. (Aug. 2004). Preteen Children and Illegal Drugs. Drugs: education, prevention and policy. Vol. 11; No. 4 (315-327). Retrieved August 18, 2009, from the University Library. U.S. DEA (2002). Drug Information. Retrieved August 18, 2009, from http://www.usdoj.gov/dea/concern/concern.htm. SAMHSA (2008). Signs of Drug Use. Retrieved August 18, 2009, from http://www.streetdrugs.org/signs1.htm