Broś, Natalia. “Public Diplomacy and Cooperation With Non-Governmental Organizations in the Liberal Perspective of International Relations”. Journal of Education Culture and Society 8, no. 1 (July 10, 2017): 11–22. Accessed May 1, 2024. https://ogrodynauk.pl/index.php/jecs/article/view/10.15503.jecs20171.11.22.