http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sách trình bày dựa theo từng đơn vị bài học và theo từng mục, tiểu mục trong sách học sinh (giáo khoa)
Study and teaching (Secondary),Dạy và học (Trung học)