1. Abad, R., 1991. Smokey Mountain. In Philippine Studies. 1, 263.
2. Residues of some chlorinated hydrocarbon pesticides in rainwater, soil and ground water and their influence on some soil microorganisms;Ahmed;Environ. Int.,1998
3. Dioxins in the environment: A review of trend data;Alcock;Environ. Sci. Technol.,1996
4. Stamping out dioxin in food?;Bradley;Environ. Sci. Technol.,2000
5. Bravante, A., Medina, L., 2004. The Philippine Enabling Activity Project: Initial assistance to the Philippines to meet its obligations under the Stockholm Convention on Persistent Organic Pollutants. Proceedings of the 1st Asian Regional Research Programme on Environmental Technology. (ARRPET); Feb. 27, 2004, Don Enrique Yuchengco Hall, De La Salle University-Manila, pp. 7–14, ISSN:1656-2801.