MUARIEF, F. Automata language in vending machines. JURNAL EKONOMI, BISNIS DAN HUMANIORA, [S. l.], v. 3, n. 2, 2024. Disponível em: https://www.eksishum.untara.ac.id/index.php/eksishum/article/view/153. Acesso em: 24 apr. 2026.