Badziak, K. (1991). Great Capitalists Fortunes in the Polish Lands before 1939 (The Case of the Poznanski Family). Polin.
Čikaški stil citiranja (17. izdanje)Badziak, Kazimierz. "Great Capitalists Fortunes in the Polish Lands Before 1939 (The Case of the Poznanski Family)." Polin 1991.
MLA način citiranja (8. izdanje)Badziak, Kazimierz. "Great Capitalists Fortunes in the Polish Lands Before 1939 (The Case of the Poznanski Family)." Polin, 1991.
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