เพชรเชนทร์ ย, ธรรมาธิกุล อ, สมเขาใหญ่ ธ. THE RELATIONSHIP BETWEEN SERVANT LEADERSHIP AND EFFECTIVENESS OF STUDENT CARE SYSTEM IN SCHOOLS UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE 12. JMND [internet]. 2019 Apr. 30 [cited 2026 Oct. 4];6(2):678-95. available from: https://so03.tci-thaijo.org/index.php/JMND/article/view/183291