Sari, Lusi Komala, Isfy Aprilian Nusen, and Bede Blaise Chukwunyere Onwuagboke. 2025. “Code-Mixing and Bilingualism in Indonesian Language Classrooms: A Case Study of Seventh-Grade Students in Riau”. Pijar : Jurnal Penelitian Bidang Pendidikan Dan Pembelajaran 5 (1):24-34. https://doi.org/10.56393/pijar.v5i1.3396.