References
- White , P. O. 29 July 1995 . “ Memorandum for Regional Administrators ” . In State Injury and Illness Data for 1993 , 29 July , Washington, DC : U.S. Department of Labor, Occupational Safety and Health Administration .
- U.S. Department of Labor, Occupational Safety and Health Administration . 1993 . Washington, DC : U.S. Department of Labor . 29 CFR 1915