Khiawon, Fontip, and Anchana Panich. 2025. “Factors Discriminating the Quality of Students’ Learning in Schools under the Secondary Educational Service Area Office Phetchaburi”. Ratchaphruek Journal 23 (2). ์์Nakhon Ratchasima, Thailand:115-30. https://doi.org/10.14456/rpjnrru.2025.23.