Badziak, K. (1991). Great Capitalists Fortunes in the Polish Lands before 1939 (The Case of the Poznanski Family). Polin.
Citace podle Chicago (17th ed.)Badziak, Kazimierz. "Great Capitalists Fortunes in the Polish Lands Before 1939 (The Case of the Poznanski Family)." Polin 1991.
Citace podle MLA (8th ed.)Badziak, Kazimierz. "Great Capitalists Fortunes in the Polish Lands Before 1939 (The Case of the Poznanski Family)." Polin, 1991.
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