Não informado. (2003). Metal and Mineral Markets. McGraw-Hill.
Chicagoスタイル(17版)引用形式Não informado. Metal and Mineral Markets. New York: McGraw-Hill, 2003.
MLA(8版)引用形式Não informado. Metal and Mineral Markets. McGraw-Hill, 2003.
警告: この引用は必ずしも正確ではありません.