http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hoàng Xuân Hãn tác phẩm được tặng giải thưởng Hồ Chí Minh: Lý Thường Kiệt ( Lịch sử - ngoại giao và tông giáo triều Lý), La Sơn Phu Tử, lịch sử Việt Nam