Using Duolingo Application In Learning Vocabulary: A Descriptive Qualitative Study At The Fifth Grade Of An Elementary School In Sumedang. (2024). Biormatika : Jurnal Ilmiah Fakultas Keguruan Dan Ilmu Pendidikan, 10(2), 131-145. https://doi.org/10.35569/biormatika.v10i2.2091