Naji Amhimmid Salih, و Malak Albago. "Study the Effect of Source of Portland Cement in Compressive Strength (COPERESION STUDY)". Bani Waleed University Journal of Humanities and Applied Sciences 8, no. 3 (سبتمبر 7, 2023): 486–492. تاريخ الوصول أغسطس 31, 2025. https://jhas-bwu.com/index.php/bwjhas/article/view/183.