http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Thiết kế bài giảng Toán trung học cơ sở 6
theo chương trình SGK do Bộ GD và ĐT ban hành năm 2002
Hoàng Ngọc Diệp( chủ biên); Nguyễn Thị Thịnh... [Và những người khác]