European Commission. Directorate-General XXII, Education, Training, and Youth, & University of Sheffield. Centre for Training Policy Studies. Continuing training in enterprises: Facts and figures. Office for Official Publications of the European Communities c1999.
Παραπομπή σε μορφή Chicago (17η εκδ.)European Commission. Directorate-General XXII, Education, Training, and Youth, και University of Sheffield. Centre for Training Policy Studies. Continuing Training in Enterprises: Facts and Figures. Luxembourg: Office for Official Publications of the European Communities c1999.
Παραπομπή σε μορφή MLA (9th εκδ.)European Commission. Directorate-General XXII, Education, Training, and Youth, και University of Sheffield. Centre for Training Policy Studies. Continuing Training in Enterprises: Facts and Figures. Office for Official Publications of the European Communities c1999.