Não informado. (1980). Enhanced Energy Recovery News. Business Communications.
Chicagoスタイル(17版)引用形式Não informado. Enhanced Energy Recovery News. Houston, Tex: Business Communications, 1980.
MLA(8版)引用形式Não informado. Enhanced Energy Recovery News. Business Communications, 1980.
警告: この引用は必ずしも正確ではありません.