European monitoring centre for drus and drug addiction & Office for Official Publications of the European Communities. (1998). Annual report on the state of the drugs problem in the European Union: 1998: 1998. Office for official publications of the European Communities.
Παραπομπή σε μορφή Chicago (17η εκδ.)European monitoring centre for drus and drug addiction και Office for Official Publications of the European Communities. Annual Report on the State of the Drugs Problem in the European Union: 1998: 1998. Luxembourg: Office for official publications of the European Communities, 1998.
Παραπομπή σε μορφή MLA (8th εκδ.)European monitoring centre for drus and drug addiction και Office for Official Publications of the European Communities. Annual Report on the State of the Drugs Problem in the European Union: 1998: 1998. Office for official publications of the European Communities, 1998.
