LAILATULALFIAH. Using Duolingo To Imrove Students’ Vocabulary At Seventh Grade Of Darajul Ulum Peniraman. JEEIM, [S. l.], v. 1, n. 1, p. 42–50, 2023. Disponível em: http://jurnal.staimempawah.ac.id/index.php/jeeim/article/view/41. Acesso em: 31 dec. 2025.