Doungpootim, Laddawan, and Jaruwan Natun. 2025. “The Condition of Internal Quality Assurance Implementation in Opportunity Expansion Schools under Uttaradit Primary Education Ser-vice Area Office 1”. MCU Haripunchai Review 9 (3):606-18. https://so04.tci-thaijo.org/index.php/JMHR/article/view/aa-0043.