Silalahi T, Napitu R. IMPROVING STUDENTS’ SPEAKING SKILL BY USINGWORD WALLMEDIA AT THE SEVENTH GRADE STUDENTS OF SMP NEGERI 10 PEMATANGSIANTAR IN THE ACADEMIC 2019/2020. JBL [Internet]. 2021 Oct. 22 [cited 2024 May 19];3(2):111-20. Available from: https://jurnal.usi.ac.id/index.php/bilingual/article/view/272