http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Văn học Việt Nam thế kỷ X nửa đầu thế kỷ XVIII
Đại học và trung học học chuyên nghiệp
Đinh Gia Khánh, Bùi Duy Tân, Mai Cao Chương