Thitipurihirun P, Pansri A. Guidelines for Promoting The Teaching Spirit of Assistant Teachers Under the Phitsanulok Primary Educational Service Area Office 1. JOIM [internet]. 2026 Aug. 19 [cited 2026 Sep. 19];2(2):1-15. available from: https://so16.tci-thaijo.org/index.php/JOIM/article/view/3588