PERANCANGAN PROTOTIPE EARLY WARNING SYSTEMBERBIAYA MURAH UNTUK PERLINTASAN SEBIDANG TANPA PENJAGAAN. VARIABLE RESEARCH JOURNAL, [S. l.], v. 1, n. 03, p. 918–927, 2024. Disponível em: https://variablejournal.my.id/index.php/VRJ/article/view/129.. Acesso em: 28 aug. 2025.