1. United Nations Office on Drug and Crime. World Drug Report 2012. New York: UN; 2012.
2. National Association of School Psychologists (NASP). Disciplining Students With Disabilities. USA: NASP; 1997.
3. U.S. Department of Health & Human Services Office of Disability. Substance Abuse and Disability: A Companion to Chapter 26 of Healthy People 2010. Washington: U.S. Department of Health & Human; 2006.
4. Katims DS, Yin Z, Zapata JS. Risk factors for substance use by Mexican American youth with and without learning disabilities. J Learn Disabil. 1996;29:213–9.
5. Westermeyer J, Kempt K, Nugent S. Substance disorder among persons with mild mental retardation: A comparative study. Am J Addict. 1998;5:23–31.