1. American Conference of Government and Industrial Hygienists. 1999. 1999 TLVs and BEIs. Cincinnati, OH: ACGIH.
2. ATSDR. 1993. Toxicological profile for chromium. Agency for Toxic Substances and Disease Registry, U.S. Department of Health and Human Services.
3. EPA. 1984. Health assessment document for chromium. EPA-600/8-83-14F.