Firich, K. T., & Przedpelski, W. A. (1921). Polish character of Upper Silesia according to official Prussian sources and the results of the plebiscite. The Central Polish plebiscite committee.
Chicago-Zitierstil (17. Ausg.)Firich, Karol T., und Waldemar A. Przedpelski. Polish Character of Upper Silesia According to Official Prussian Sources and the Results of the Plebiscite. Warsaw: The Central Polish plebiscite committee, 1921.
MLA-Zitierstil (8. Ausg.)Firich, Karol T., und Waldemar A. Przedpelski. Polish Character of Upper Silesia According to Official Prussian Sources and the Results of the Plebiscite. The Central Polish plebiscite committee, 1921.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.