ECOTEC Research and Consulting & Centro Europeo para el Desarrollo de la Formación Profesional. (1991). Occupational and qualification structures in the field of environmental protection in the metal and chemical industries in the United Kingdom. Office for Official Publications of the European Communities.
Cita Chicago Style (17a ed.)ECOTEC Research and Consulting y Centro Europeo para el Desarrollo de la Formación Profesional. Occupational and Qualification Structures in the Field of Environmental Protection in the Metal and Chemical Industries in the United Kingdom. Luxembourg: Office for Official Publications of the European Communities, 1991.
Cita MLA (9a ed.)ECOTEC Research and Consulting y Centro Europeo para el Desarrollo de la Formación Profesional. Occupational and Qualification Structures in the Field of Environmental Protection in the Metal and Chemical Industries in the United Kingdom. Office for Official Publications of the European Communities, 1991.
