Spiro, T. G., & Stigliani, W. M. (2003). Chemistry of the environment (2nd ed.). Prentice-Hall of India.
Dyfyniad Arddull ChicagoSpiro, Thomas G., and William M. Stigliani. Chemistry of the Environment. 2nd ed. New Delhi: Prentice-Hall of India, 2003.
Dyfyniad MLASpiro, Thomas G., and William M. Stigliani. Chemistry of the Environment. 2nd ed. Prentice-Hall of India, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.