Sampul, M. J. A., E. E. Masengi, and S. V. Tarore. “Protocol Division Roles in Facilitating Regional Head Activities: A Public Management Study at a Regional Secretariat”. International Journal of Information Technology and Education, vol. 5, no. 3, June 2026, pp. 256-73, https://www.ijite.jredu.id/index.php/ijite/article/view/372.