Risnajayanti R, Akib I, Mawardi A. Islamic Spiritual Leadership in Early Childhood Education: A Systematic Review of Models for Quality and Character Development. PIJED [Internet]. 2025 Dec. 8 [cited 2026 Jul. 10];4(2):837-53. Available from: https://ejournal.ppsdp.org/index.php/pijed/article/view/770