จันทร์สาห์น., เวชชะป., ยาวิราชพ., & รัตนชูวงศ์ไ. (2019). Policy proposals for teacher development to meet professional standards. In accordance with the 21st century learning management. Phayao Primary Education Service Area Office 1. KASALONGKHAM RESEARCH JOURNAL, 12(2), 147-156. Retrieved from https://www.tci-thaijo.org/index.php/ksk/article/view/174315