Harrison, R. M. (1999). Understanding our environment: An introduction to environmental chemistry and pollution (3rd ed.). Royal Society of Chemistry.
Dyfyniad Arddull ChicagoHarrison, Roy M. Understanding Our Environment: An Introduction to Environmental Chemistry and Pollution. 3rd ed. Cambridge: Royal Society of Chemistry, 1999.
Dyfyniad MLAHarrison, Roy M. Understanding Our Environment: An Introduction to Environmental Chemistry and Pollution. 3rd ed. Royal Society of Chemistry, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.