Não informado. (1970). Energy. U.S. Department of Commerce, National Technical Information Service.
Chicagoスタイル(17版)引用形式Não informado. Energy. Springfield, Va: U.S. Department of Commerce, National Technical Information Service, 1970.
MLA(8版)引用形式Não informado. Energy. U.S. Department of Commerce, National Technical Information Service, 1970.
警告: この引用は必ずしも正確ではありません.