Mellya Miranda Putri, Mulyadi, M. and Gustianingsih, G. 2024. The Structure of Interrogative Sentences in Langkat Malay: An Analysis of X-Bar Theory. RETORIKA: Jurnal Ilmu Bahasa. 10, 2 (Aug. 2024), 585-593. DOI:https://doi.org/10.55637/jr.10.2.9296.585-593.