Abuse, National Institute on Drug (2020-08-20). "Commonly Used Drugs Charts". National Institute on Drug Abuse. Archived from the original on 2021-05-18. Retrieved 2021-05-18.
Abuse, National Institute on Drug (2020-08-20). "Commonly Used Drugs Charts". National Institute on Drug Abuse. Archived from the original on 2021-05-18. Retrieved 2021-05-18.