Maratussholihah, M., Lisan, K. H. and Hikmah, H. (2026) “Developing English language material integrated with Duolingo App for young learners in UNU Yogyakarta English Club Program”, Journal of General Education and Humanities. Bandung, Indonesia, 5(1), pp. 1469–1486. doi: 10.58421/gehu.v5i1.937.