PAOULAYAN, ROBERTO C. “NOTES ON THE FAMILY AMPULLARIIDAE (GASTROPODA: PROSOBRANCHIA) IN THE PHILIPPINES: I. DIGESTIVE, CIRCULATORY, AND EXCRETORY SYSTEMS”. BIOTROPIA, no. 6 (January 11, 2024). Accessed May 2, 2024. https://journal.biotrop.org/index.php/biotropia/article/view/104.