Budiman. “Testing of Nutmeg Shell As a Normal Concrete Material in Terms of Volume Weight and Compressive Strength Value”. Logic : Jurnal Rancang Bangun dan Teknologi 21, no. 3 (November 30, 2021): 129–138. Accessed November 5, 2024. https://ojs2.pnb.ac.id/index.php/LOGIC/article/view/90.