Observatorio Europeo de las Drogas y las Toxicomanías. (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.
Cita Chicago Style (17a ed.)Observatorio Europeo de las Drogas y las Toxicomanías. 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.
Cita MLA (9a ed.)Observatorio Europeo de las Drogas y las Toxicomanías. 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.
