GRUBER, E. Tip Ton. WLBforum, Stuttgart, v. 22, n. 2, p. 55, 2020. DOI: 10.53458/wlbf.v22i2.101. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/wlbf/article/view/101. Acesso em: 28 märz. 2024.