songsaen, sivaporn. 2023. “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 (3). Bangkok, Thailand:EDUCU5103007. https://doi.org/10.14456/educu.2023.25.