HAJN, Zbigniew. The International Labour Organisation’s Recommendation No. 198 and Self-Employed Workers. Acta Universitatis Lodziensis. Folia Iuridica, Poland, v. 107, p. 41–53, 2024. DOI: 10.18778/0208-6069.107.03. Disponível em: https://www.czasopisma.uni.lodz.pl/Iuridica/article/view/23376. Acesso em: 8 aug. 2026.