1. Acosta, B.O., and R.S.V. Pullin 1991. Environmental impact of the golden snail (Pomacea sp.) on rice farming systems in the Philippines. Summary report of the workshop held on November 9–10. Freshwater Aquaculture Center, Central Luzon State University (FAC-CLSU), Philippines and International Center for Living Aquatic Resources Management (ICLARM), Manila, Philippines.
2. Adalla, C.B., and B. Morallo-Rejesus. 1989. The golden snail, Pomacea sp.: A serious pest of lowland rice in the Philippines. In I. Henderson (ed.), Slugs and Snails in World Agriculture. Proceedings of a symposium organized by the British Crop Protection Council in association with the Malcological Society of London, held on April 10–12, University of Surrey, Guilford, UK.
3. Ahmed, A.M., M.P. Bimbao and R.C. Sevilleja. 1992. The economics of rice-fish farming in Asian mixed farming system—a case study of the Philippines. In C.N. dela Cruz, C. Lightfoot, B.A. Costa, Pierce, V.R. Carangal and M.P. Bimbao (eds.). Rice fish Research and Development in Asia (pp. 207–216). ICLARM Conference Proceedings 24. International Center for Living Aquatic Resources Management. Manila, Philippines: (ICLARM).
4. APHA, AWWA, and WPCF—American Public Health Association, American Water Works Association, and Water Pollution Control Federation. 1971. J.M. Taras, A.E. Greenberg, R.D. Hoak and M.C. Rand (eds.), Standard methods for water and wastewater analyses. Washington, D.C.: APHA.
5. APHA, AWWA, and WPCF—American Public Health Association, American Water Work Association and Water Pollution Control Federation. 1974. Standard methods for the examination of water and wastewater. Washington, D.C.: APHA.