Syahrulyati, Teti, Singgih Irianto, and Yusup Suhendi. “Reserve Potential Sandy Clay As a Raw Materials Cement Village Hambalang, County Citeureup District Bogor Province Jawabarat – Indonesia”. International Journal of Engineering and Technology 7, no. 3.20 (September 1, 2018): 398–401. Accessed May 12, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/20580.