Learttavisin, Kulasup, Achara Niyamapha, and Prompilai Buasuwan. 2019. “Guidelines for Internal Quality Assurance, in Accordance With Policy Framework of the School Evaluation and Quality Assurance System Reform, for Private Schools in Bangkok”. Rajapark Journal 13 (30). Bangkok, Thailand:201-15. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/220402.