"Health assessment document for diesel engine exhaust". U.S. Environmental Protection Agency (EPA). 2002. Archived from the original on 2022-10-07. Retrieved 2023-09-20. Prepared by the National Center for Environmental Assessment, Washington, DC, for the Office of Transportation and Air Quality; EPA/600/8-90/057F. Available from: National Technical Information Service, Springfield, VA; PB2002-107661, and www.epa.gov/ncea.
"Health assessment document for diesel engine exhaust". U.S. Environmental Protection Agency (EPA). 2002. Archived from the original on 2022-10-07. Retrieved 2023-09-20. Prepared by the National Center for Environmental Assessment, Washington, DC, for the Office of Transportation and Air Quality; EPA/600/8-90/057F. Available from: National Technical Information Service, Springfield, VA; PB2002-107661, and www.epa.gov/ncea.