Ratajczak, Krzysztof. „Apostolic Legates in Poland in the Middle Ages and Their Role in Adopting Particular Ecclesiastical Legislation by the Polish Church – Educational Aspects”. Biuletyn Historii Wychowania, no. 38 (listopad 7, 2018): 53–65. Udostępniono kwiecień 23, 2024. https://pressto.amu.edu.pl/index.php/bhw/article/view/20134.