Dr. Haba Abdelmalek. “Psychological Harmony Among Pre-School Students (A Field Study on a Sample of Pre-School Section Children in El-Oued Municipality)”. Pegem Journal of Education and Instruction 15, no. 4 (December 5, 2025): 2965–2974. Accessed March 12, 2026. https://pegegog.net/index.php/pegegog/article/view/4485.