Don Ramli, Dona Raihana, Kadaruddin Aiyub, and Kadir Arifin. “Social Return on Investment (SROI) Framework for Measuring the Real Value of Sungai Muda Flood Mitigation Program”. GEOGRAFI 4, no. 2 (October 21, 2016): 92–99. Accessed May 4, 2024. https://ejournal.upsi.edu.my/index.php/GEOG/article/view/1938.