Sayfullah. S, Muh. “Experimental Test of Compressive Strength of Concrete by Using Wastewater Tofu”. SCEJ (Shell Civil Engineering Journal) 7, no. 1 (June 20, 2022): 22–28. Accessed July 4, 2025. https://jurnal-umbuton.ac.id/index.php/SCEJ/article/view/2555.