Substance Abuse Among Individuals with Intellectual Disabilities (2012)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3328139/
Survey on Substance Misuse and Persons with Intellectual Disability in Southeastern Ontario (2012)
http://www.community-networks.ca/wp-content/uploads/2015/11/survey-report-oct-15v.pdf