Hariwan, Peggy, Bambang Juanda, Sri Mulatsih, and Himawan Hariyoga. “Analysis of Energy Efficiency on the Manufacturing Industry in Indonesia”. International Journal of Energy Economics and Policy 11, no. 5 (August 20, 2021): 28–36. Accessed April 23, 2024. https://econjournals.com/index.php/ijeep/article/view/11395.