Leimena, H. E. P., T. S. Subahar, and Adianto. “POPULATION STRUCTURE OF TOPSHELLS (TROCHUS NILOTICUS) IN SAPARUA ISLAND, CENTRAL MOLUCCAS-INDONESIA”. BIOTROPIA, vol. 14, no. 2, Sept. 2008, pp. 52-61, doi:10.11598/btb.2007.14.2.18.