Não informado. (2003). Polish Journal of Natural Sciences. University of Warmia and Mazury in Olsztyn.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Polish Journal of Natural Sciences. Olsztyn, Polonia: University of Warmia and Mazury in Olsztyn, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Polish Journal of Natural Sciences. University of Warmia and Mazury in Olsztyn, 2003.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.