Riki Priyandi, Yeni Absah, Prihatin Lumbanraja and Iskandar Muda 2025. THE INFLUENCE OF TRANSFORMATIONAL LEADERSHIP ON MANAGERIAL PERFORMANCE OF JUNIOR HIGH SCHOOL PRINCIPALS MEDIATED BY EMPLOYEE ENGAGEMENT AND INNOVATIVE WORK BEHAVIOR. PUBLISH BUKU UNPRI PRESS ISBN. 1, 1 (Feb. 2025).