Suharto, R. B., E. Rochaida, J. Roy, and M. Permana. “Analysis of Inclusive Economic Development of Environmental Quality in Indonesia by Examining Environmental Kuznets Curve”. International Journal of Energy Economics and Policy, vol. 11, no. 4, June 2021, pp. 225-9, https://www.econjournals.com/index.php/ijeep/article/view/11114.