Sakina, R. and Astuti, R.S. 2024. Using Duolingo Application In Learning Vocabulary: A Descriptive Qualitative Study At The Fifth Grade Of An Elementary School In Sumedang. Biormatika : Jurnal ilmiah fakultas keguruan dan ilmu pendidikan. 10, 2 (Sep. 2024), 131–145. DOI:https://doi.org/10.35569/biormatika.v10i2.2091.