Priyatna, Bayu, Topan Trianto, Julifer P Manurung, Nono Heryana, and Arip Solehudin. 2021. “Sistem Preventive Maintenance Berbasis Web Dengan Menggunakan Algoritma Priority Scheduling Pada PT. Beta Pharmacon”. INTERNAL (Information System Journal) 3 (2):41-53. https://doi.org/10.32627/internal.v3i2.294.