H. Habibi, Mesiono, and M. Sitorus, “The Main Pathways For Improving Educational Quality In ‎State Islamic Senior High Schools in Deli Serdang Regency: An ‎Analysis of Principals’ Policies, Personality Traits, and ‎Professional Development”, jpi, vol. 6, no. 1, pp. ‎478–489, Apr. 2026.