S.H, Fauziah, and Agamuthu P. “Closure and Post-Closure of Landfills in Malaysia: Lessons Learnt”. Malaysian Journal of Science 29, no. 3 (December 30, 2010): 231–238. Accessed May 10, 2025. http://mojes.um.edu.my/index.php/MJS/article/view/7396.