Krieger, G. R. (1995). Accident prevention manual for business & industry: Environmental management. National Safety Council.
Cita Chicago (17th ed.)Krieger, Gary R. Accident Prevention Manual for Business & Industry: Environmental Management. Itasca, IL: National Safety Council, 1995.
Cita MLA (9th ed.)Krieger, Gary R. Accident Prevention Manual for Business & Industry: Environmental Management. National Safety Council, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.