Santosa MH, Pratama IPS, Putra INAJ. Developing Android-Based English Vocabulary Learning Materials for Primary School Students. JEELS [Internet]. 2020 May 20 [cited 2024 Nov. 23];7(1):161-85. Available from: https://jurnalfaktarbiyah.iainkediri.ac.id/index.php/jeels/article/view/210