Mai Thị Bích Hòa. (2004). Asking for permission in English in comparison with Vietnamese.
Chicago Style aipamenaMai Thị Bích Hòa. Asking for Permission in English in Comparison With Vietnamese. 2004.
MLA aipamenaMai Thị Bích Hòa. Asking for Permission in English in Comparison With Vietnamese. 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.