Onsavath, A., and R. Thummachote. “The Competencies of Small and Medium Enterprise Directors in Vientiane Capital, Lao People’s Democratic Republic”. Rajapark Journal, vol. 13, no. 30, Sept. 2019, pp. 83-94, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/206520.