Não informado. (1931). Metallurgical Abstracts. Institute of Metals.
Chicagoスタイル(17版)引用形式Não informado. Metallurgical Abstracts. London: Institute of Metals, 1931.
MLA(8版)引用形式Não informado. Metallurgical Abstracts. Institute of Metals, 1931.
警告: この引用は必ずしも正確ではありません.