Soffi, S. N. S., & Sharif, A. M. (2014). Kepimpinan Transformasi Pengarah Kolej Vokasional dan Efikasi Kendiri Pensyarah Kolej Vokasional: Transformational Leadership of Vocational College Directors and Self-Efficacy of Vocational College Lecturers. EDUCATUM Journal of Science, Mathematics and Technology, 1(2). https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/22