Não informado. (1968). Materials today. American Society for Metals.
Chicagoスタイル(17版)引用形式Não informado. Materials Today. Cleveland, Ohio: American Society for Metals, 1968.
MLA(8版)引用形式Não informado. Materials Today. American Society for Metals, 1968.
警告: この引用は必ずしも正確ではありません.