National Risk Management Research Laboratory (U.S.). (2001). Guide to industrial assessments for pollution prevention and energy efficiency. U.S. Environmental Protection Agency.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Risk Management Research Laboratory (U.S.). Guide to Industrial Assessments for Pollution Prevention and Energy Efficiency. Cincinnati: U.S. Environmental Protection Agency, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Risk Management Research Laboratory (U.S.). Guide to Industrial Assessments for Pollution Prevention and Energy Efficiency. U.S. Environmental Protection Agency, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.