Wojciech Morawiecki: Les organisations internationales, Warszawa 1961, PWN. Contemporary Central & East European Law, [S. l.], n. 3, p. 23–24, 1964. Disponível em: https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1682. Acesso em: 6 oct. 2025.