Bednarz, Piotr. “Swiss Volunteers in the International Brigades in Spain (1936–1939)”. Acta Universitatis Lodziensis. Folia Historica, no. 97 (December 30, 2016): 127–142. Accessed December 8, 2025. https://www.czasopisma.uni.lodz.pl/historica/article/view/2049.