Lermkummarn, M. “Lifelong Education Management of Participatory Process Model for Students’ Career Skills in Local School”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 5, no. 2, Dec. 2018, pp. 131-42, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/210527.