Mohd Haniff, Mohd Hanifiah, et al. “A Conceptual Model of the Mediating Role of Professional Learning Communities in the Relationship Between Learning-Centered Leadership and School Effectiveness in Malaysian Vocational Colleges”. International Journal of Academic Research in Progressive Education and Development, vol. 14, no. 4, Dec. 2025, pp. 2488-04, https://ijarped.com/index.php/journal/article/view/4044.