Hasibi, Rahmat Adiprasetya Al, Agus Jamal, Indar Surahmat, Tio Hardiyanto, Yessi Jusman, and Fardhan Arkan. 2019. “Comparative Analysis of the Use of LED and HPS Lights in PT. Bukit Asam”. Journal of Electrical Technology UMY 3 (3):83-88. https://doi.org/10.18196/jet.3358.