1. “Aims and Structure’’, Accessed April 3, 2021, https://www.visegradgroup.eu/about/aims-and-structure
2. “Anti-Russian views on the rise in Poland’’, Accessed 05, April, 2021, https://www.pewresearch.org/fact-tank/2015/03/19/anti-russian-views-on-the-rise-in-poland/
3. “50. yılında Prag Baharı: O dönem neler yaşandı?, ’’ last modified August 21, 2018, https://tr.euronews.com/2018/08/21/50-yilinda-prag-bahari-o-donem-neler-yasandi-.
4. Bobek, Bartosz. "Ideology of the Hungarian far right on the example of Jobbik, the movement for a better Hungary." Ante Portas–Studia nad Bezpieczeństwem 2 (2017): 201-213.
5. Brechtefeld, Jörg. Mitteleuropa and German politics: 1848 to the present. New York: Springer, 1996.