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https://i.hexuexiao.cn/up/59/0c/d4/2a8590d2cea3b5393657d90fffd40c59.jpg
“The Differences between Hard and Soft Drugs.” Gateway Foundation, 25 Aug. 2021, https://www.gatewayfoundation.org/addiction-blog/hard-vs-soft-drugs/.
“Drug Abuse in Schools: Drugs in High School.” Turnbridge, 26 Jan. 2021, https://www.turnbridge.com/news-events/latest-articles/drug-abuse-in-schools/#.
“Overdose Death Rates.” National Institutes of Health, U.S. Department of Health and Human Services, 1 Feb. 2022, https://nida.nih.gov/drug-topics/trends-statistics/overdose-death-rates.