L.  Guerrero, ?The biology of golden snail in relation to Philippine conditions?, in Environmental impact of the golden snail (Pomacea sp.) on rice farming systems in the Philippines, B. O.  Acosta and Pullin, R. S. V., Eds. Munoz, Nueva Ecija, Philippines: Freshwater Aquaculture Center, 1991, pp. 10-11.

B. O.  Acosta and Pullin, R. S. V., ?Environmental impact of the golden snail (Pomacea sp.) on rice farming systems in the Philippines?. Munoz, Nueva Ecija, Philippines, p. vi + 34 pp, 1991.