Pane H, Gaustama Putra. Barcode-Based Light Fire Extinguisher (APAR) Monitoring with the Waterfall Case Study Method of PT. PLN (Persero) UPK Nagan Raya. JI [Internet]. 2023Feb.10 [cited 2026Apr.21];8(1):82-1. Available from: https://inotera.poltas.ac.id/index.php/inotera/article/view/218