Bibliografia

Principal

• ( ) Hoffman, D. J.
• ( ) Rattner, B, A. Burton G. A. and Cairns, J. (1995) Handbook of Ecotoxicology (ed.) Lewis publishers, CRC press London Burton, M.A.S. (1986). Biological Monitoring of Environmental Contaminants (Plants). King' s College London, University of London.

Secundária

• ( ) Alloway, B.J. (1990). Heavy metals in the soils. John Wiley & Sons Lda (eds). Press London. Andrews, J.E.
• ( ) Brimblecombe, P
• ( ) Jickells, T.d. and Liss, P.S. (1996) An Introduction to Environmental Chemistry  (eds). Blackwell Science Ltd.