Situngkir, Anna Mariana. “EVALUATION AND IMPROVEMENT OF DRAINAGE PERFORMANCE IN GEDONGTATAAN, LAMPUNG USING DUFLOW MODELING STUDIO”. Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) 6, no. 2 (December 1, 2016): 111. Accessed January 22, 2021. http://jma.journal.ipb.ac.id/index.php/jpsl/article/view/11559.