Não informado. (2018). Report of the U.S. National Committee for the International Biological Program. National Academy of Sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Report of the U.S. National Committee for the International Biological Program. Washington: National Academy of Sciences, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Report of the U.S. National Committee for the International Biological Program. National Academy of Sciences, 2018.
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