Putra, Juris Justitio Hakim, et al. “Comparing “Carbon Tax” and ‘Cap and Trade’ As Mechanism to Reduce Emission in Indonesia”. International Journal of Energy Economics and Policy, vol. 11, no. 5, Aug. 2021, pp. 106-11, https://econjournals.net.tr/index.php/ijeep/article/view/11375.