Kongmanee, C., P. Satsue, and P. Phitthayaphinant. “Output and Outcome of Para-Rubber Research Projects under Para-Rubber Industry Development Project Package”. Kasetsart Journal of Social Sciences, vol. 40, no. 3, Oct. 2019, pp. 774-82, https://so04.tci-thaijo.org/index.php/kjss/article/view/242373.