Links
[1] http://www.drugabuse.gov/related-topics/trends-statistics/monitoring-future/monitoring-future-survey-overview-findings-2014
[2] http://www.rethinkpot.org/tags/monitoring-future
[3] http://www.rethinkpot.org/tags/perception
[4] http://www.rethinkpot.org/tags/harm
[5] http://www.rethinkpot.org/tags/statistical-reports
[6] http://www.drugabuse.gov/related-topics/trends-statistics/monitoring-future/monitoring-future-figures-2014