Wichmanowski, Marcin. “The PSL "Piast" and PSL ‘Wyzwolenie’ people’s Parties in View of the Election of the First President of the Republic of Poland”. Studies in Politics and Society 21, no. 2 (October 31, 2023): 270–284. Accessed December 5, 2025. https://journals.ur.edu.pl/polispol/article/view/4852.