http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hiểu và dùng đúng văn phạm anh văn
(Understanding and using English grammar),Song ngữ Anh Việt
Betty Schrampfer Azar; Người dịch Nguyễn Phúc