“Pembelian Bahan Baku Optimal Ready Mix Concrete Dengan Metode Economic Order Quantity: Pembelian Bahan Baku Optimal Ready Mix Concrete Dengan Metode Economic Order Quantity”. Jurnal Sistem Teknik Industri 22, no. 2 (July 10, 2020): 25–32. Accessed March 22, 2026. https://idjpcr.usu.ac.id/jsti/article/view/3827.