http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sổ tay tóm tắt kiến thức tiếng Anh
Hoàng Văn Sít chủ biên; Trần Hữu Mạnh, Đặng Trần Cường