Cita APA (7th ed.)

Microsoft Corporation. (1998). Microsoft MS-DOS User;s guide Operating system version 4.01. Microsoft Corporation.

Cita Chicago (17th ed.)

Microsoft Corporation. Microsoft MS-DOS User;s Guide Operating System Version 4.01. New York: Microsoft Corporation, 1998.

Cita MLA (9th ed.)

Microsoft Corporation. Microsoft MS-DOS User;s Guide Operating System Version 4.01. Microsoft Corporation, 1998.