NUDIA; AINUN. The Effect of Using English Slang Words on Students’ Speaking Skill Of The Year 2018/2019 Tenth Grade Students Of Sma Negeri 1 Hinai Kabupaten Langkat. Serunai : Jurnal Ilmiah Ilmu Pendidikan, [S. l.], v. 3, n. 2, p. 108–118, 2018. Disponível em: https://www.ejournal.stkipbudidaya.ac.id/index.php/serunai/article/view/33. Acesso em: 14 nov. 2026.