http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
(Luyện kỹ năng nghe, nói và phát âm tốt tiếng Anh)
Tổng hợp Thành phố Hồ Chí Minh
David Nunan ; Nguyễn Thành Yến dịch