Não informado. (1971). Environmental health and safety news. University of Washington, Environmental Research Laboratory.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Environmental Health and Safety News. Seattle, Wash: University of Washington, Environmental Research Laboratory, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Environmental Health and Safety News. University of Washington, Environmental Research Laboratory, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.