Jenks, W. Encyclopaedia of occupational health and safety. International Labour Office.
Cita Chicago (17th ed.)Jenks, Wilfred. Encyclopaedia of Occupational Health and Safety. Geneva: International Labour Office.
Cita MLA (9th ed.)Jenks, Wilfred. Encyclopaedia of Occupational Health and Safety. International Labour Office.
Atenció: Aquestes cites poden no estar 100% correctes.