Não informado. (2019). Industrial Minerals. Industrial Minerals Information.
Chicagoスタイル(17版)引用形式Não informado. Industrial Minerals. London: Industrial Minerals Information, 2019.
MLA(8版)引用形式Não informado. Industrial Minerals. Industrial Minerals Information, 2019.
警告: この引用は必ずしも正確ではありません.