Djohar, M.A. et al. 2020. Marine Waste Analysis And Abundance of gastropods In Mangrove Ecosystem Tongkaina, North Sulawesi. Jurnal Ilmiah PLATAX. 8, 1 (May 2020), 15–23. DOI:https://doi.org/10.35800/jip.8.1.2020.27597.