http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Niên giám các điều ước quốc tế nước Cộng hòa xã hội chủ nghĩa Việt Nam ký năm 1994
Nguyễn Thị Hoàng Anh, Lê Thị Tuyết Mai, Bành Yên Thế (biên soạn)