McMichael, A. J., 1993. Planetary Overload – Global Environmental Change and the Health of the Species. Cambridge University Press.

Lang, T. and Clutterbuck, C., 1991. P is for Pesticides, Ebury Press, Random Century Group, 256 p.

http://www.radian.com/standards; http://ro-systemsnet/atrazine.html

Stevens and others, 1994. http://www-oem.ucdavis.edu~beaumont/Agrichem/herbicides/triazine/triazine.html Stevens, J. T. and Sumner, D. D., 1991. Herbicides, in Handbook of Pesticide Toxicology, Vol. 3. Classes of Pesticides, Toronto: Academic Press Inc, 1317–1408. See also Environmental Endocrine Disrupters: A handbook of property data, 1999.