1. The Pesticide Manual Incorporating the Agrochemical Handbook, 10th ed. (Ed. C. Tomlin), The British Crop Protection Council and The Royal Society of Chemistry, UK 1995.
2. The WHO Recommended Classification of Pesticides by Hazard and Guidelines to Classification 1996–1997, WHO, Geneva 1996.
3. US Environmental Protection Agency, Drinking Water Health Advisory: Pesticides, US Environmental Protection Agency, Lewis, Chelsea, MI 1989.
4. Code of Federal Regulations, Title 40, Part 141, US Government Printing Office, July 1, 2002.
5. EEC Drinking Water Guidelines 80/779/EEC, EEC No. L229, Brussels 1980, 11–29.