Buanawaty, Puspaning, and Fithra Faisal Hastiadi. “The Impact of Kyoto Protocol on Environment Quality in the Free Trade Era: The Case of G20 Countries”. International Journal of Economics and Financial Issues 7, no. 3 (June 29, 2017): 36–42. Accessed November 24, 2024. https://mail.econjournals.com/index.php/ijefi/article/view/4346.