SZAREK, Stanisław. Przyczyny zróżnicowania poziomu rozwoju gospodarczego w Polsce: The reasons for differences in the levels of economic development in Poland. Management and Administration Journal, [S. l.], v. 23, n. 96, p. 99–117, 2021. Disponível em: https://czasopisma.uws.edu.pl/znadministracja/article/view/2121. Acesso em: 5 oct. 2024.