SIPOWICZ, Kasper. Repression of Polish Catholic Clergy in Reichsgau Wartheland 1939-1945. Quarterly Journal Fides et Ratio, [S. l.], v. 30, n. 2, p. 279–290, 2017. Disponível em: https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/693. Acesso em: 13 aug. 2025.