Sinaga, Parlagutan. “THE INFLUENCE OF PRINCIPAL LEADERSHIP, TEACHER COMPETENCE, AND TEACHER COMMITMENT ON THE PERFORMANCE OF VOCATIONAL HIGH SCHOOL TEACHERS AT YADIKA SCHOOLS IN WEST JAVA”. Jurnal Satya Mandiri Manajemen dan Bisnis 11, no. 2 (November 28, 2025): 111–118. Accessed April 17, 2026. https://www.ojs.jekobis.org/index.php/satyamandiri/article/view/560.