World Health Organisation. (1989). WHO Expert committee on drug dependence. World Health Organisation.
استشهاد بنمط شيكاغوWorld Health Organisation. WHO Expert Committee on Drug Dependence. Geneva: World Health Organisation, 1989.
MLA استشهادWorld Health Organisation. WHO Expert Committee on Drug Dependence. World Health Organisation, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.