Koren, H. (1996). Illustrated dictionary of environmental health & occupational safety. Lewis Publishers.
Dyfyniad Arddull ChicagoKoren, Herman. Illustrated Dictionary of Environmental Health & Occupational Safety. Boca Raton: Lewis Publishers, 1996.
Dyfyniad MLAKoren, Herman. Illustrated Dictionary of Environmental Health & Occupational Safety. Lewis Publishers, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.