SAWICKA, J.; SZEWCZYK-JAROCKA, M.; NOWACKA, A. Financial aspects of unregistered employment in Poland and other Eastern European countries. Przegląd Wschodnioeuropejski, [S. l.], v. 12, n. 2, p. 195–209, 2021. DOI: 10.31648/pw.6873. Disponível em: https://czasopisma.uwm.edu.pl/index.php/pw/article/view/6873. Acesso em: 2 maj. 2024.