Saelee, Judaporn. “Success Factors in Management: A Case Study of the Sufficiency Economy Learning Center, The Office of the Royal Development Project Board”. Rajapark Journal 14, no. 32 (February 25, 2020): 155–167. Accessed April 19, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/215597.