Najwa Lahmady et al. 2023. THE USE OF DUOLINGO TO INCREASE THE STUDENTS’ VOCABULARY MASTERY AT JUNIOR HIGH SCHOOL. MERDEKA : Jurnal Ilmiah Multidisiplin. 1, 2 (Dec. 2023), 293–300. DOI:https://doi.org/10.62017/merdeka.v1i2.602.