Qureshi, A. S. ., S. A. . Soomro, and N. A. . Memon. “Quality Assurance in Testing of Highway Materials in Pakistan”. International Journal of Sustainable Construction Engineering and Technology, vol. 11, no. 4, Feb. 2021, pp. 99-108, https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/8085.