., Budiarsih, et al. “Pencemaran Udara Dan Air Sebagai Satu Isu Kesihatan Persekitaran Di Indonesia Dan Malaysia: Air and Water Pollution As One of the Environmental Health Issues in Indonesia and Malaysia”. GEOGRAFI, vol. 5, no. 3, Dec. 2017, pp. 54-63, https://ejournal.upsi.edu.my/index.php/GEOG/article/view/2068.