THE CAUSAL RELATIONSHIP MODEL OF ETHICAL LEADERSHIP ACCORDING TO THE PRINCIPLES OF UNIVERSAL GOODNESS OF ADMINISTRATORS OF EDUCATIONAL INSTITUTIONS UNDER THE OFFICE OF PHRA NAKHON SI AYUTTHAYA SECONDARY EDUCATIONAL SERVICE AREA. JRA [Internet]. 2023 Dec. 30 [cited 2024 Dec. 22];5(2):12722-35. Available from: https://journlra.org/index.php/jra/article/view/1567