APA
World Health Organization, . (1977). International nonproprietary names (inn) for pharmaceutical substances: Denominations communes internationales (Dci) pour Les Substances pharmaceutiques. Geneva: World Health Oraganization.
Chicago
World Health Organization, . 1977. International nonproprietary names (inn) for pharmaceutical substances: Denominations communes internationales (Dci) pour Les Substances pharmaceutiques. Geneva: World Health Oraganization.
Harvard
World Health Organization, . (1977). International nonproprietary names (inn) for pharmaceutical substances: Denominations communes internationales (Dci) pour Les Substances pharmaceutiques. Geneva: World Health Oraganization.
MLA
World Health Organization, . International nonproprietary names (inn) for pharmaceutical substances: Denominations communes internationales (Dci) pour Les Substances pharmaceutiques. Geneva: World Health Oraganization. 1977.