LÜLL, M. WLB in Zahlen 2007. WLBforum, Stuttgart, v. 10, n. 1, p. 11, 2008. DOI: 10.53458/wlbf.v10i1.414. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/wlbf/article/view/414. Acesso em: 29 märz. 2024.