The first stage of the political and military battle for Upper Silesia. The First Silesian Uprising in Polish school history textbooks of the 21st century. Zaranie Śląskie, [S. l.], n. 9, p. 143–166, 2023. Disponível em: https://zaranieslaskie.bs.katowice.pl/article/view/32. Acesso em: 7 oct. 2025.