Goh , K. M., Nair, L. N. M., & Fuad, D. R. S. M. (2026). A CONCENTRIC RING MODEL FOR DIAGNOSING PROFESSIONAL LEARNING COMMUNITY (PLC) EFFECTIVENESS: A CONCEPTUAL STUDY. INTERNATIONAL JOURNAL OF EDUCATION, PSYCHOLOGY AND COUNSELLING (IJEPC), 11(63), 473–490. https://doi.org/10.35631/IJEPC.1163027