The Growth of Human Capital in Poland. Research Bulletins of the Faculty of Economic Sciences, [S. l.], v. 1, n. 19, p. 135–156, 2015. Disponível em: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/22. Acesso em: 20 jul. 2025.