Latteerasuwan , S., A. Naipinit, and S. Kaenmanee. “Competency factors of entrepreneurs in the Northeastern region of Thailand affecting competitiveness against countries in the Greater Mekong Sub-region”. Journal of Business Administration The Association of Private Higher Education Institutions of Thailand, vol. 9, no. 1, June 2020, pp. 174-95, https://so02.tci-thaijo.org/index.php/apheitvu/article/view/242892.