European Monitoring Centre for Drugs and Drug Addiction. (2007). Guidelines for the evaluation of treatment in the field of problem drug use: A manual for researchers and professionals. Office for Official Publications of the European Communities.
Παραπομπή σε μορφή Chicago (17η εκδ.)European Monitoring Centre for Drugs and Drug Addiction. Guidelines for the Evaluation of Treatment in the Field of Problem Drug Use: A Manual for Researchers and Professionals. Luxembourg: Office for Official Publications of the European Communities, 2007.
Παραπομπή σε μορφή MLA (8th εκδ.)European Monitoring Centre for Drugs and Drug Addiction. Guidelines for the Evaluation of Treatment in the Field of Problem Drug Use: A Manual for Researchers and Professionals. Office for Official Publications of the European Communities, 2007.
