Cukingnan, Aileen Joyce, & Roberto Pagulayan.
" Anatomy of the Digestive System of <i>Radix</i> sp. (Bassomatophora: Lymnaeidae) from Lake Taal, Batangas." <em>Science Diliman: A Journal of Pure and Applied Sciences</em> [Online], (1995): n. pag. Web.  9 Sep. 2025