The Silesian (Wroclaw) response to the events in Upper Silesia in the years 1918−1922/1926. Zaranie Śląskie, [S. l.], n. 5, p. 49–60, 2021. Disponível em: https://zaranieslaskie.bs.katowice.pl/article/view/85. Acesso em: 7 oct. 2025.