Boonnak ส. (2022) “THE RELATIONSHIP BETWEEN INSTRUCTIONAL LEADERSHIP OF PRINCIPALS AND PROFESSIONAL LEARNING COMMUNITY OF SCHOOLS UNDER LOEI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 2”, Integrated Social Science Journal, 2(4), pp. 57–68. Available at: https://ojs.mbuslc.ac.th/index.php/issj/article/view/76 (Accessed: 10 November 2026).