Não informado. (1956). Polish co-operative review. Supreme Co-Operative Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Polish Co-operative Review. Warsaw: Supreme Co-Operative Council, 1956.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Polish Co-operative Review. Supreme Co-Operative Council, 1956.
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