Panjaitan, Nelson Balisar. “A Meta-Analysis of Word Walls’ Effectiveness in Improving English Vocabulary Among Junior High School Students.”. Acuity: Journal of English Language Pedagogy, Literature and Culture 9, no. 2 (June 16, 2024): 219-231. Accessed November 22, 2024. https://jurnal.unai.edu/index.php/acuity/article/view/3053.