WHO Expert Committee on Drug Dependence. (1999). WHO Expert Committee on Drug Dependence: Twenty-first report. World Health Organization.
Lua i Stíl Chicago (17ú heag.)WHO Expert Committee on Drug Dependence. WHO Expert Committee on Drug Dependence: Twenty-first Report. Geneva: World Health Organization, 1999.
Lua MLA (9ú heag.)WHO Expert Committee on Drug Dependence. WHO Expert Committee on Drug Dependence: Twenty-first Report. World Health Organization, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.