Suri, D. dkk. 2024. IMPROVING STUDENTS’ VOCABULARY MASTERY BY USING DUOLINGO OF THE EIGHTH GRADE AT SMPS BUDI UTOMO . Pedagogi: Jurnal Ilmiah Pendidikan. 10, 1 (Jan 2024), 102–110. DOI:https://doi.org/10.47662/pedagogi.v10i1.675.