DEMİRBİLEK, Mesut, and Münevver ÇETİN. “Entrepreneurship Competencies of School Principals: A Scale Development Study”. International Journal of Contemporary Educational Research 8, no. 3 (October 30, 2022): 55–80. Accessed November 23, 2024. https://ijcer.net/index.php/pub/article/view/190.