12 Va. Admin. Code § 35-105-9999
The ASAM: Treatment for Addictive, Substance-Related and Co-Occurring Conditions, Third Edition, American Society of Addiction Medicine, Address, asam.org.
Diagnostic and Statistical Manual of Mental Disorders, 5th Edition. DSM-5, American Psychiatric Association, 800 Maine Avenue, S.W., Suite 900 Washington, DC 20024, psychiatry.org