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 Style (17th ed.) CitationFirich, Karol T., and 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 (8th ed.) CitationFirich, Karol T., and 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.
Warning: These citations may not always be 100% accurate.