McDonal, J. C. (1981). Recent advances in occupational health. Churchill Livingstone.
Cita Chicago (17th ed.)McDonal, J. C. Recent Advances in Occupational Health. Churchill Livingstone, 1981.
Cita MLA (9th ed.)McDonal, J. C. Recent Advances in Occupational Health. Churchill Livingstone, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.