Tambunan, Teddy, Seow Tawee, and Oei Fuk Jin. “Operational Risk Simulation Model and Financial System for Wastewater Treatment Plants (WWTP) in Industrial Parks”. Golden Ratio of Mapping Idea and Literature Format 6, no. 2 (April 16, 2026): 1800–1812. Accessed April 23, 2026. https://goldenratio.id/index.php/grmilf/article/view/2187.