Lihawa, Kartin. “Cultural Integration in English Material (a Study on students’ Vocabulary Mastery and Its Effect on Communication Ability)”. Journal of English Teaching and Linguistic Issues (JETLI) 2, no. 3 (November 30, 2023): 133–148. Accessed September 8, 2024. https://ejournal.iaingorontalo.ac.id/index.php/JETLI/article/view/1473.