Não informado. (1971). Environmental health and safety news. University of Washington, Environmental Research Laboratory.
Chicagoスタイル(17版)引用形式Não informado. Environmental Health and Safety News. Seattle, Wash: University of Washington, Environmental Research Laboratory, 1971.
MLA(8版)引用形式Não informado. Environmental Health and Safety News. University of Washington, Environmental Research Laboratory, 1971.
警告: この引用は必ずしも正確ではありません.