Umam, R. 2025. Professionalism of Islamic Religious Education Teachers in the Implementation of Teacher Professional Education (PPG): A Descriptive Qualitative Analysis in the Era of Education 4.0: Profesionalitas Guru PAI dalam Implementasi Pendidikan Profesi Guru (PPG): Analisis Kualitatif Deskriptif di Era Pendidikan 4.0. Zawayatul Fikr: Journal of Islamic Education. 1, 1 (Jun. 2025), 48–58.