Sakina, Rahma, and Riyanti Sri Astuti. 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):131-45. https://doi.org/10.35569/biormatika.v10i2.2091.