Turnip MC, Rumapea L, Sari ASP. IMPROVING STUDENTS’ VOCABULARY MASTERY BY USING PICTURES MEDIA TO THE SEVENTH GRADE STUDENTS OF SMP NEGERI 21 MEDAN. KAIROS [Internet]. 2020Jun.16 [cited 2024Jul.22];1(3):103-16. Available from: https://ejournal.ust.ac.id/index.php/KAIROS/article/view/716