songsaen, sivaporn. “The Development of the Credit Bank System Mechanism Model for the Management of Lifelong Learning Education at Chiang Rai Rajabhat University: The Development of the Credit Bank System Mechanism Model for the Management of Lifelong Learning Education at Chiang Rai Rajabhat University”. Journal of Education Studies, Chulalongkorn University 51, no. 3 (September 30, 2023): EDUCU5103007. accessed September 4, 2026. https://so02.tci-thaijo.org/index.php/EDUCU/article/view/260031.