Pratiwi, R., Haira, N., Zelkasih, R. and Ibrahim, A. 2023. The Difficulties of Modern Teenagers in Expressing Mandailing Codes(Partuturon) at Hayuraja, Panyabungan Selatan. KHELIE: Khatulistiwa English Language and Linguistics. 1, 1 (Dec. 2023), 10 - 22. DOI:https://doi.org/10.24260/khelie.v1i1.2202.