http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Leo Jones ; Nguyễn Văn Lộc, Bùi Quang Đông, Bùi Thị Diễm Châu ( dịch và chú giải )
Study and teaching,Textbooks for foreign speakers,Học tập và nghiên cứu,Sách dùng cho người nước ngoài