Jasmine, Divania, and Robi Sugara. “Air Navigation Sovereignty Through Indonesia-Singapore Fir Boundary Realignment In 2022 ”. Ilomata International Journal of Social Science 5, no. 1 (January 18, 2024): 1-13. Accessed August 21, 2024. https://ilomata.org/index.php/ijss/article/view/1039.