Nguyen, Phuong Linh, and Thi My Duyen Huynh. “Non-Verbal Language Application in Language Teaching and Learning in the English Classroom: A Systematic Review Study”. Dong Thap University Journal of Science - Social Sciences and Humanities Issue, vol. 13, no. 7, Oct. 2024, pp. 70-77, doi:10.52714/dthu.13.7.2024.1339.