Ismail, Febrin Anas. “STUDI KUAT TEKAN BETON CAMPURAN 1 : 2 : 3 BERDASARKAN LOKASI PENGAMBILAN AGREGAT DI SUMATERA BARAT”. Jurnal Rekayasa Sipil (JRS-Unand) 5, no. 2 (October 15, 2009): 1–12. Accessed April 1, 2026. https://jrs.ft.unand.ac.id/index.php/jrs/article/view/v5-n2-ismail.