Não informado. (1954). API abstracts of refining literature. American Petroleum Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. API Abstracts of Refining Literature. New York: American Petroleum Institute, 1954.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. API Abstracts of Refining Literature. American Petroleum Institute, 1954.
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