Não informado. (1949). Science reports of the Research Institutes. Tohoku University, Research Institutes.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Science Reports of the Research Institutes. Sendai, Japão: Tohoku University, Research Institutes, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Science Reports of the Research Institutes. Tohoku University, Research Institutes, 1949.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.