AMAL KHAMIS ABDULLAH AL-HANDHALI, ABU DARDAA BIN MOHAMAD, HASANAH ABD. KHAFIDZ. 2025. “EFFECT OF ONLINE TRAINING ON PROFESSIONAL AND TECHNICAL COMPETENCE DEVELOPMENT IN SCHOOL PRINCIPALS IN OMAN”. TPM – Testing, Psychometrics, Methodology in Applied Psychology 32 (4- December):910-24. https://tpmap.org/submission/index.php/tpm/article/view/3272.