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, [S. l.], v. 1, n. 1, p. 14–21, 2025. Disponível em: https://jurnal-ijgam.or.id/index.php/IJGAM/article/view/4. Acesso em: 27 dec. 2025.