Bria, Melchior, Sutirto Sutirto, and Anastasia Muda. “tudy of ustainability rigation ystem”. IJIEEB International Journal of Integrated Education, Engineering and Business eISSN 2615-1596 pISSN 2615-2312 2, no. 1 (March 30, 2019): 79-86. ccessed November 24, 2024. https://jurnal.narotama.ac.id/index.php/ijieeb/article/view/813.