Não informado. (1976). IMM Bulletin. Institution of Mining and Metallurgy.
Chicagoスタイル(17版)引用形式Não informado. IMM Bulletin. London: Institution of Mining and Metallurgy, 1976.
MLA(8版)引用形式Não informado. IMM Bulletin. Institution of Mining and Metallurgy, 1976.
警告: この引用は必ずしも正確ではありません.