Não informado. (2000). Transactions of the Illinois State Academy of Science. Illinois State Academy of Science.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Transactions of the Illinois State Academy of Science. Springfield, Ill: Illinois State Academy of Science, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Transactions of the Illinois State Academy of Science. Illinois State Academy of Science, 2000.
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