Não informado. (1966). Air Pollution Titles. Pennsylvania State University, Center for Air Environmental Studies.
Chicagoスタイル(17版)引用形式Não informado. Air Pollution Titles. University Park, Pa: Pennsylvania State University, Center for Air Environmental Studies, 1966.
MLA(8版)引用形式Não informado. Air Pollution Titles. Pennsylvania State University, Center for Air Environmental Studies, 1966.
警告: この引用は必ずしも正確ではありません.