Abu Talib, Mohd Khaidir, et al. “Peat Stabilization by Using Ordinary Portland Cement (OPC) Mixed With Rice Husk Ash (RHA)”. International Journal of Integrated Engineering, vol. 16, no. 4, Aug. 2024, pp. 140-6, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/16323.