Badziak, K. (1991). Great Capitalists Fortunes in the Polish Lands before 1939 (The Case of the Poznanski Family). Polin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBadziak, Kazimierz. "Great Capitalists Fortunes in the Polish Lands Before 1939 (The Case of the Poznanski Family)." Polin 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBadziak, Kazimierz. "Great Capitalists Fortunes in the Polish Lands Before 1939 (The Case of the Poznanski Family)." Polin, 1991.
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