Não informado. (1971). Environmental health and safety news. University of Washington, Environmental Research Laboratory.
Cita Chicago Style (17a ed.)Não informado. Environmental Health and Safety News. Seattle, Wash: University of Washington, Environmental Research Laboratory, 1971.
Cita MLA (8a ed.)Não informado. Environmental Health and Safety News. University of Washington, Environmental Research Laboratory, 1971.
Precaución: Estas citas no son 100% exactas.