THE EFFECT OF ROLE PLAY STRATEGY ON STUDENTS’ SPEAKING ABILITY AT EIGHTH GRADE OF SMP NEGERI 9 PEMATANGSIANTAR. jbl [Internet]. 2022 Apr. 25 [cited 2025 Jan. 10];4(1):13 – 17. Available from: http://jurnal.usi.ac.id/index.php/jbl/article/view/1003