Pratiwi, Firda, dan Sawarni Hasibuan. “Perencanaan Persediaan Bahan Baku Amoxicillin Menggunakan Metode Material Requirement Planning: Studi Kasus”. Operations Excellence: Journal of Applied Industrial Engineering, vol. 12, no. 3, November 2020, hlm. 344-5, doi:10.22441/oe.2020.v12.i3.007.