Purba, Ridwin, and Cindy Nirvana Aritonang. “The Effect of Role Playing Strategy on Students’ Speaking Ability At Eighth Grade of SMP Negeri 9 Pematangsiantar”. Bilingual : Jurnal Pendidikan Bahasa Inggris 4, no. 1 (April 25, 2022): 13 –. Accessed April 29, 2024. https://jurnal.usi.ac.id/index.php/bilingual/article/view/376.