Ćwirlej, Ryszard. “June 1956 Protests in Poznań – Poznań Radio and the Polish Section of Radio Free Europe and Their Role in Providing Information about the Events in Poznań”. Central European Political Studies, no. 3 (October 2, 2019): 195–211. Accessed July 17, 2024. https://pressto.amu.edu.pl/index.php/ssp/article/view/19868.