Santosa, Made Hery, I Putu Surya Pratama, and I Nyoman Adi Jaya Putra. “Developing Android-Based English Vocabulary Learning Materials for Primary School Students”. JEELS (Journal of English Education and Linguistics Studies) 7, no. 1 (May 20, 2020): 161–185. Accessed May 18, 2024. https://jurnalfaktarbiyah.iainkediri.ac.id/index.php/jeels/article/view/210.