Plangnuam, Podjana, Charoenwich Sompongtam, and Jamrat Sonkla. “The Relationship Between Instructional Leadership of Principals and Professional Learning Community of Schools under Sisaket Primary Educational Service Area Office 2”. Research and Development Journal Sisaket Rajabhat University 12, no. 2 (December 16, 2025): 72–90. accessed September 3, 2026. https://so01.tci-thaijo.org/index.php/sskru-resarch/article/view/283688.