Phongsaksri, Jumpot. “Manpower Development Direction of the Ceramic Industry in the Northern Region”. Journal of Management Science Chiangrai Rajabhat University 16, no. 1 (June 30, 2021): 196–218. accessed September 11, 2026. https://so03.tci-thaijo.org/index.php/jmscrru/article/view/241917.