A’yun, I. Q., and D. Anggrayni. “Determinants of CO2 Emissions: Evidence from United States”. Proceedings of Femfest International Conference on Economics, Management, and Business, vol. 1, Mar. 2023, pp. 647-63, https://ejournal.unida.gontor.ac.id/index.php/FICCOMSS/article/view/10894.