Na Lamphun, R., P. Na Lamphun, P. Patompak, and J. Chitpong. “Gamification’s Effect in Social Media on CSR Activities”. INTERNATIONAL SCIENTIFIC JOURNAL OF ENGINEERING AND TECHNOLOGY (ISJET), vol. 3, no. 1, June 2019, pp. 25-30, https://ph02.tci-thaijo.org/index.php/isjet/article/view/198971.