Undeclared labour in Europe towards an integrated approach of combatting undeclared labour ; final report (Regioplan Research Advice and Information, 2001)
Literaturverz. S. 95 - 96. - Adresse: http://europa.eu.int/comm/employment_social/docs/undeclared_labour.pdf. - Electronic ed.: [Brussels], 2001. - Speicherung: 26.03.2002