Heatubun, Rivelda Pricilia, and Yoga Suharman. “Environmental Issue and Digital Diplomacy in the Contemporary International Relations”. Nation State: Journal of International Studies 6, no. 1 (June 30, 2023): i - ii. Accessed May 9, 2025. https://jurnal.amikom.ac.id/index.php/nsjis/article/view/1171.