Mieczysław Maneli, O funcjach państwa [The Functions of the State], Warszawa 1963, PWN. Contemporary Central & East European Law, [S. l.], n. 5, p. 26–27, 1965. Disponível em: https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1715. Acesso em: 6 oct. 2025.