United States. Department of Health and Human Services. Substance Abuse and Mental Health Services Administration & Research Triangle Institute. (2000). National household survey on drug abuse: Main findings 1998. Department of Health and Human Services, Substance Abuse and Mental Health Services Administration.
Chicago-referens (17:e uppl.)United States. Department of Health and Human Services. Substance Abuse and Mental Health Services Administration och Research Triangle Institute. National Household Survey on Drug Abuse: Main Findings 1998. Rockville, Md: Department of Health and Human Services, Substance Abuse and Mental Health Services Administration, 2000.
MLA-referens (9:e uppl.)United States. Department of Health and Human Services. Substance Abuse and Mental Health Services Administration och Research Triangle Institute. National Household Survey on Drug Abuse: Main Findings 1998. Department of Health and Human Services, Substance Abuse and Mental Health Services Administration, 2000.