Cita APA (7a ed.)

MICROSOFT.. (1987). Microsoft MS-DOS user`s guide: Operating system version 3.3. Microsoft Corporation.

Cita Chicago Style (17a ed.)

MICROSOFT.. Microsoft MS-DOS User`s Guide: Operating System Version 3.3. Taiwan: Microsoft Corporation, 1987.

Cita MLA (9a ed.)

MICROSOFT.. Microsoft MS-DOS User`s Guide: Operating System Version 3.3. Microsoft Corporation, 1987.