Asst. Prof. Dr. Ali Abdul Wahhab Majeed. "Using the Direct Method in the Environmental Impact Assessment of Air Pollution in Iraq". Journal of Educational and Human Sciences, no. 46 (يوليو 24, 2025): 179-195. تاريخ الوصول يونيو 19, 2026. https://mail.jeahs.com/index.php/jeahs/article/view/669.