Khiawon, Fontip, and Anchana Panich. “Factors Discriminating the Quality of Students’ Learning in Schools under the Secondary Educational Service Area Office Phetchaburi”. Ratchaphruek Journal 23, no. 2 (August 14, 2025): 115–130. accessed October 11, 2026. https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/278577.