Thi Van Hoai, Tran. “The Phenomenon of Code Switching Between Vietnamese and English in Communication of Vietnamese Office Staff”. VNUHCM Journal of Social Sciences and Humanities 5, no. 3 (August 19, 2021): 1139-1145. Accessed April 26, 2024. http://stdjssh.scienceandtechnology.com.vn/index.php/stdjssh/article/view/690.