PIĄTKOWSKI, Jan; RUTKOWSKA, Beata. Expansion of collective labour law into non-employee employment relationships. Studia Iuridica Toruniensia, [S. l.], v. 33, n. 2, p. 261–280, 2024. DOI: 10.12775/SIT.2023.030. Disponível em: https://apcz.umk.pl/SIT/article/view/45344. Acesso em: 18 jan. 2025.