Suri, D., Rahmawati, W. T., & Lubis, S. I. (2024). IMPROVING STUDENTS’ VOCABULARY MASTERY BY USING DUOLINGO OF THE EIGHTH GRADE AT SMPS BUDI UTOMO . Pedagogi: Jurnal Ilmiah Pendidikan, 10(1), 102–110. https://doi.org/10.47662/pedagogi.v10i1.675