1. Abeysekera, W.A.T. 1988. Pesticide use in the food production sector in Sri Lanka. In Use of pesticides and health hazards in the plantation sector, ed. G. Botterweck, 12–37. Colombo: Friedrich-Ebert-Stiftung.
2. Akobundu, I.O. 1997. Basic elements for improved weed management in the developing world. In Proceedings of the expert consultation on weed ecology and management conference, 22–24 September 1997, 86–92. Rome, Italy.
3. Altieri, M. 1995. Agroecology: The science of sustainable agriculture, 2nd ed. Boulder: Westview Press.
4. Altieri, M.A., and M. Liebman eds. 1988. Weed management in agroecosystems: Ecological approaches. Boca Raton: CRC Press.
5. Anderson, W.P. 1996. Weed science. New York, NY: West Publishing Company.