Não informado. (1938). British Chemical and Physiological Abstracts. Bureau of Chemical Abstracts.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. British Chemical and Physiological Abstracts. London: Bureau of Chemical Abstracts, 1938.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. British Chemical and Physiological Abstracts. Bureau of Chemical Abstracts, 1938.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.