Não informado. (1993). Medical & Pharmaceutical Biotechnology Abstracts. Cambridge Scientific Abstracts.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Medical & Pharmaceutical Biotechnology Abstracts. Bethesda, Md: Cambridge Scientific Abstracts, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Medical & Pharmaceutical Biotechnology Abstracts. Cambridge Scientific Abstracts, 1993.
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