http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Cẩm nang lập trình hệ thống cho máy vi tính IBM-PC bằng pascal, C, Assembler và basic
Tischer Michael, Nguyễn Mạnh Hùng, Quác Tuấn Ngọc