Trivedy, R. K. (1996). Handbook of environmental laws, acts, rules, guidelines, compliances and standards( 2 vols.). Enviro Media.
Dyfyniad Arddull ChicagoTrivedy, R. K. Handbook of Environmental Laws, Acts, Rules, Guidelines, Compliances and Standards( 2 Vols.). Karad: Enviro Media, 1996.
Dyfyniad MLATrivedy, R. K. Handbook of Environmental Laws, Acts, Rules, Guidelines, Compliances and Standards( 2 Vols.). Enviro Media, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.