APA (7 ম সংস্করণ) উদ্ধৃতি

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.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Firich, Karol T., এবং 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.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Firich, Karol T., এবং 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.