Hatani, L., L. Arufi, N. Rommy, U. Usman, and J. Jumadil. “Enhancing Public Service Quality through Servant Leadership, Employee Competence, and Self-Efficacy”. International Journal of Management and Education in Human Development, vol. 6, no. 03, Sept. 2026, pp. 2012-8, https://ijmehd.com/index.php/ijmehd/article/view/397.