http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nguyễn Đức Vũ, Trần Thị Tuyết Mai, Nguyễn Thị Kim Liên (chủ biên)
Study and teaching (Secondary),Dạy và học (trung học)