http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nội dung của giáo trình gồm 4 chương: Lý thuyết hệ điều hành; hệ điều hành MS-DOS; hệ điều hành Windows; hệ điều hành mạng
Operating systems (computers),Hệ điều hành (máy vi tính)