Chenglin, Bian, Liu Jinlin, Yang Liuyan, and Bian Zhiyao. “An Empirical Study on the Relationship Between Language Proficiency and Economic Income of Chinese and Vietnamese Border Residents: A Case Study of Dongxing City, Guangxi Province”. JOURNAL OF ADVANCES IN LINGUISTICS 11 (January 10, 2020): 1–18. Accessed November 22, 2024. https://rajpub.com/index.php/jal/article/view/8551.