Koren, H. (1996). Illustrated dictionary of environmental health and occupational safety. Lewis Publishers.
Cita Chicago (17th ed.)Koren, Herman. Illustrated Dictionary of Environmental Health and Occupational Safety. Boca Raton: Lewis Publishers, 1996.
Cita MLA (9th ed.)Koren, Herman. Illustrated Dictionary of Environmental Health and Occupational Safety. Lewis Publishers, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.