Não informado. (1950). IMM Abstracts. Institution of Mining and Metallurgy.
Chicagoスタイル(17版)引用形式Não informado. IMM Abstracts. London: Institution of Mining and Metallurgy, 1950.
MLA(8版)引用形式Não informado. IMM Abstracts. Institution of Mining and Metallurgy, 1950.
警告: この引用は必ずしも正確ではありません.