BROŚ, Natalia. Public diplomacy and cooperation with non-governmental organizations in the liberal perspective of international relations. Journal of Education Culture and Society, [S. l.], v. 8, n. 1, p. 11–22, 2017. Disponível em: https://jecs.pl/index.php/jecs/article/view/10.15503.jecs20171.11.22. Acesso em: 2 may. 2026.