Agustina, I., H. Khuan, B. Aditi, S. A. Sitorus, and T. P. Nugrahanti. “Renewable Energy Mix Enhancement: The Power of Foreign Investment and Green Policies”. International Journal of Energy Economics and Policy, vol. 13, no. 6, Nov. 2023, pp. 370-8, doi:10.32479/ijeep.14796.