Luzain Habibah Al-Athar, Irsyad Nugraha, and Mohammad Soni, “The Relationship between Personal Factors and Institutional Environment on English Learning Motivation in Islamic Boarding Schools: A Study of the L2 Motivational Self System”, JURAGAN, vol. 3, no. 1 (Spesial Issue), pp. 4386–4394, Mar. 2026, doi: 10.62710/sj4cd925.