PURWASIH, Ratih; RAHIMMULAILY, Rahimmulaily. Analysis of difficulty level of information system students in communicating English in industrial era 4.0. Jurnal Pendidikan Vokasi, [S. l.], v. 9, n. 1, p. 83–91, 2019. DOI: 10.21831/jpv.v9i1.22761. Disponível em: https://journal.uny.ac.id/index.php/jpv/article/view/22761. Acesso em: 5 may. 2025.