เพิ่มทันจิตต์ ก. “POLICY SCIENCES : CRITICAL OBSERVATIONS ON LIMITATIONS AND FUTURE POTENTIAL: Grit Permtanjit”. Journal of MCU Social Science Review, vol. 7, no. 2, July 2018, pp. 215-23, https://so03.tci-thaijo.org/index.php/jssr/article/view/132832.