Παραπομπή APA
Koning, J. d., Denys, J., Walwei, U., & European Commission. (1999). Deregulation in placement services: A comparative study for eight EU countries. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleKoning, Jaap de., Jan Denys, Ulrich Walwei, and European Commission. Deregulation in Placement Services: A Comparative Study for Eight EU Countries. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLAKoning, Jaap de., Jan Denys, Ulrich Walwei, and European Commission. Deregulation in Placement Services: A Comparative Study for Eight EU Countries. Luxembourg: Office for Official Publications of the European Communities, 1999.
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