Deewanichsakul, S., B. Sramoon, and A. Wannaharnon. “The Development of Potential in Problem Solving of Production Staff in Glass Industry”. Princess of Naradhiwas University Journal, vol. 11, no. 3, May 2019, pp. 180-9, https://li01.tci-thaijo.org/index.php/pnujr/article/view/163653.