Faliyandra, Faisal. “THE EXISTENCE OF CUSTOMARY LAW IN THE PERSPECTIVE OF INTERNATIONAL LAW AND ITS CHALLENGES IN HARMONIZING NATIONAL LAW”. Interdisciplinary Journal of Global and Multidisciplinary 1, no. 1 (April 13, 2025): 14–21. Accessed December 27, 2025. https://jurnal-ijgam.or.id/index.php/IJGAM/article/view/4.