Não informado. (2003). Platts Energy Business & Technology. McGraw-Hill.
Chicagoスタイル(17版)引用形式Não informado. Platts Energy Business & Technology. New York: McGraw-Hill, 2003.
MLA(8版)引用形式Não informado. Platts Energy Business & Technology. McGraw-Hill, 2003.
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