Cita APA (7th ed.)
United Nations. Office for Drug Control and Crime Prevention. (2001). Global illicit drug trends.
Cita Chicago (17th ed.)
United Nations. Office for Drug Control and Crime Prevention. Global Illicit Drug Trends. New York, 2001.
Cita MLA (9th ed.)
United Nations. Office for Drug Control and Crime Prevention. Global Illicit Drug Trends. 2001.
Atenció: Aquestes cites poden no estar 100% correctes.