LE, Thanh Nhan.
 Lịch sự trong giao tiếp ngôn ngữ.
<strong>VNU Journal of Foreign Studies</strong>, [S.l.], v. 20, n. 4, dec. 2004.
ISSN 2525-2445.
Available at: &lt;<a href="https://js.vnu.edu.vn/FS/article/view/4110" target="_new">https://js.vnu.edu.vn/FS/article/view/4110</a>&gt;. Date accessed: 04 july 2024.