Panjaitan, dkk, Timbul. “PENGELOLAAN PENCEMARAN UDARA AKIBAT TRANSPORTASI DI KAWASAN PERUMAHAN DI PINGGIRAN METROPOLITAN”. EKOTON 3, no. 2 (May 19, 2012). Accessed March 23, 2026. https://ejournal.unsrat.ac.id/v3/index.php/EKOTON/article/view/296.