lailatulalfiah. Using Duolingo To Imrove Students’ Vocabulary At Seventh Grade Of Darajul Ulum Peniraman. jeeim [Internet]. 2023 Feb. 20 [cited 2025 Dec. 31];1(1):42-50. Available from: http://jurnal.staimempawah.ac.id/index.php/jeeim/article/view/41