National Risk Management Research Laboratory (U.S.). (2001). Guide to industrial assessments for pollution prevention and energy efficiency. U.S. Environmental Protection Agency.
Chicago-referens (17:e uppl.)National Risk Management Research Laboratory (U.S.). Guide to Industrial Assessments for Pollution Prevention and Energy Efficiency. Cincinnati: U.S. Environmental Protection Agency, 2001.
MLA-referens (9:e uppl.)National Risk Management Research Laboratory (U.S.). Guide to Industrial Assessments for Pollution Prevention and Energy Efficiency. U.S. Environmental Protection Agency, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.