Galuh Ratna Sumenggar, Ibrahim Bafadal, and Juharyanto. 2025. “Effective Principal Spiritual Leadership in Improving Teacher Motivation and Performance in Religious-Based Schools (Multi-Site Study of Muhammadiyah 7 Vocational High School Gondanglegi and Yos Sudarso Senior High School Batu)”. Al-Afkar, Journal For Islamic Studies 8 (3):242-50. https://doi.org/10.31943/afkarjournal.v8i3.1599.