HAJN, Zbigniew. Methods of protecting dependent work provided outside the employment relationship under Polish law. Studia Prawno-Ekonomiczne, [S. l.], v. 113, p. 69–85, 2020. DOI: 10.26485/SPE/2019/113/4. Disponível em: https://czasopisma.ltn.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/729. Acesso em: 4 may. 2024.