United Nations Office for Drug Control and Crime Prevention & United Nations Office on Drugs and Crime. (1999). Global illicit drug trends. United Nations Office for Drug Control and Crime Prevention.
Citazione stile Chigago Style (17a edizione)United Nations Office for Drug Control and Crime Prevention e United Nations Office on Drugs and Crime. Global Illicit Drug Trends. New York: United Nations Office for Drug Control and Crime Prevention, 1999.
Citatione MLA (9a ed.)United Nations Office for Drug Control and Crime Prevention e United Nations Office on Drugs and Crime. Global Illicit Drug Trends. United Nations Office for Drug Control and Crime Prevention, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.