Kazimierz Libera: Zasady międzynarodowego prawa konsularnego, PWN, Warszawa 1960. Contemporary Central & East European Law, [S. l.], n. 1, p. 22–23, 2019. Disponível em: https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1614. Acesso em: 7 oct. 2025.