OSHA's Voluntary Protection Programs

Richardson M.R. , & Catanzaro G.J. (1989). Introduction to the VPP—OSHA's voluntary protection programs. Job Safety and Health Quarterly, 1(1), 16–18.

U.S. Department of Labor, Occupational Safety and Health Administration. (1989). VPP—OSHA voluntary protection programs. (Available from US Department of Labor, OSHA, Room N3700, 200 Constitution Ave., N.W., Washington D.C., 20210).

Voluntary protection programs. (1988, July 12). Federal Register, 53(133), 26339–26348.