“Analysis Activities International Coastal Clean-up in Pantai Amal Baru, Tarakan Indonesia”. Berdikari: Jurnal Pengabdian Masyarakat Indonesia 2, no. 2 (June 10, 2020): 68–82. Accessed August 2, 2026. https://www.jurnaljpmi.com/index.php/jpmi/article/view/81.