http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bru- Nây Tìm hiểu về Hiệp hội các quốc gia Đông Nam Á - Asean
Hoàng Văn Mạnh; Nguyễn Tiến Thịnh;Trịnh Hữu Khanh