Mazly Mohd Nor, and Haslinda Ab Aziz. 2019. “Kesan Penggunaan Sisa Precious Slag Ball Pada Sifat Konkrit”. Politeknik & Kolej Komuniti Journal of Engineering and Technology 4 (1). Putrajaya, Malaysia:210-18. https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/267.