http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Muôn mặt đời thường của nguyên thủ quốc gia và thủ tướng một số nước trên thế giới
Nguyễn Đăng Dung, Nguyễn Trọng Điệp