Não informado. Polish Scientific Periodicals. Polish Academy of Sciences, Documentation and Scientific Information Centre.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Polish Scientific Periodicals. Warsaw: Polish Academy of Sciences, Documentation and Scientific Information Centre.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Polish Scientific Periodicals. Polish Academy of Sciences, Documentation and Scientific Information Centre.
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