http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Niên giám thống kê Việt Nam năm 2019
Cộng Hòa Xã Hội Chủ Nghĩa Việt Nam
Chính văn bằng 2 thứ tiếng: Việt - Anh