Les assurances sociales en République Populaire de Pologne (1944 - 1975). Contemporary Central & East European Law, [S. l.], n. 3 (27), p. 5–20, 1975. Disponível em: https://czasopisma.inp.pan.pl/index.php/cceel/article/view/968. Acesso em: 6 oct. 2025.