Umar, Muhammad Zakaria, and Hapsa Rianty. “PERBANDINGAN ANTARA BATAKO BETON MEKANIK DAN MANUAL”. SINERGI 21, no. 2 (June 27, 2017): 122–128. Accessed October 26, 2026. https://publikasi.mercubuana.ac.id/index.php/sinergi/article/view/1361.