Mat Norwani, N., I. Tamby Chek, A. R. Ahmad, and E. Singai. “PRINCIPAL’S LEADERSHIP STYLES, STUDENTS’ MOTIVATION AND ACADEMIC ACHIEVEMENT IN MALAYSIAN SECONDARY SCHOOLS”. Journal of Contemporary Issues and Thought, vol. 2, Mar. 2019, pp. 115-28, https://ejournal.upsi.edu.my/index.php/JCIT/article/view/937.