Sakke, Nordin, Hamirdin B. Ithnin, and Mohamad Suhaily Yusri Che Ngah. “Aplikasi Kaedah Paras Ambang Dalam Menentukan Peristiwa Kemarau Di Lembangan Sungai Langat, Selangor, Malaysia: Application of Threshold Level Method in Determining Drought Events in The Sungai Langat Basin, Selangor, Malaysia”. Perspektif Jurnal Sains Sosial dan Kemanusiaan 7, no. 3 (December 10, 2015): 47–58. Accessed April 29, 2024. https://ojs.upsi.edu.my/index.php/PERS/article/view/1716.