Muhammad Zafar Iqbal, Khizar Hayat, Jahan Ara Shams. An Investigation of School Leadership Effectiveness at Secondary Level in District Sargodha. JELM [Internet]. 2023 Feb. 8 [cited 2024 Jul. 22];1(1). Available from: https://ojs.aiou.edu.pk/index.php/jelm/article/view/307