Graczyk, Konrad. 2021. „«This Is a Disastrous Reform for us.» A Project on the Administrative Division of the State into Voivodeships from 1931 and Its Reception Among German Diplomacy”. Rocznik Polsko-Niemiecki, nr 29 (wrzesień):11-29. https://doi.org/10.35757/RPN.2021.29.01.