Danel, Łukasz. “The Polish Party System After 25 Years - Theory and Practice”. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, no. 921 (December 10, 2015): 35–53. Accessed November 22, 2024. https://krem.uek.krakow.pl/index.php/krem/article/view/699.