@book{ title = {Profils professionnelles }, author = {}, editor = {Buck, Gerhard}, editor = {Centro europeo per lo sviluppo della formazione professionale}, editor = {Cresti, Federico}, editor = {Paulet, J.L.}, year = {1992}, edition = {1.re ed}, address = {Luxembourg }, publisher = {Office de publications officielles des Communautés européennes}, }