APA (7th ed.) Citation

MICROSOFT.. (1987). Microsoft ms-dos: User guide version 3.3. Microsoft Corporation.

Chicago Style (17th ed.) Citation

MICROSOFT.. Microsoft Ms-dos: User Guide Version 3.3. Taiwan: Microsoft Corporation, 1987.

MLA (9th ed.) Citation

MICROSOFT.. Microsoft Ms-dos: User Guide Version 3.3. Microsoft Corporation, 1987.