Wierzbicki, A. (1921). The truth about Upper Silesia: A speech made in the Polish Diet on january 28th 1921 by deputy A. Wierzbicki : a resolution was passed by the Diet to publish this speech at the expense of the nation. Diet of the Polish Republic.
Chicago-Zitierstil (17. Ausg.)Wierzbicki, Andrzej. The Truth About Upper Silesia: A Speech Made in the Polish Diet on January 28th 1921 by Deputy A. Wierzbicki : A Resolution Was Passed by the Diet to Publish This Speech at the Expense of the Nation. Warsaw: Diet of the Polish Republic, 1921.
MLA-Zitierstil (9. Ausg.)Wierzbicki, Andrzej. The Truth About Upper Silesia: A Speech Made in the Polish Diet on January 28th 1921 by Deputy A. Wierzbicki : A Resolution Was Passed by the Diet to Publish This Speech at the Expense of the Nation. Diet of the Polish Republic, 1921.