Não informado. (1926). Annual survey of american chemistry. National Research Council, Division of Chemistry and Chemical Technology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annual Survey of American Chemistry. New York: National Research Council, Division of Chemistry and Chemical Technology, 1926.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annual Survey of American Chemistry. National Research Council, Division of Chemistry and Chemical Technology, 1926.
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