Chhiev, B., and Jongrungrot, V. “Rubber agroforestry system (RAS) practices to overcome rubber price and soil erosion in Southern Thailand”. International Journal of Agricultural Technology 17, no. 1 (January 15, 2021): 13–32. accessed October 11, 2025. https://li04.tci-thaijo.org/index.php/IJAT/article/view/5897.