Khun-inkeeree, Hareesol, and Singha Tulyakul. 2021. “Teacher Motivation, Preventive Strategies Toward Lesson Implementation in Physical Education Teachers”. Technium Social Sciences Journal 19 (1). Constanta, Romania:144-55. https://techniumscience.com.techniumscience.pluscommunication.eu/index.php/socialsciences/article/view/3118.