Efendi, Aco. “Investigation for Collapsed Navigation Structures in The Mahakam River Delta by Bathymetry and Sonar”. JURNAL RIVET 5, no. 01 (July 1, 2025): 11-21. Accessed June 29, 2026. http://jurnal.unidha.ac.id/index.php/RIVT/article/view/2062.