APA (7th ed.) Citation

(1991). Microsoft MS-DOS user's guide and reference for the MS-DOS Operating system version 5.0. Microsoft Corporation.

Chicago Style (17th ed.) Citation

Microsoft MS-DOS User's Guide and Reference for the MS-DOS Operating System Version 5.0. U.S.A: Microsoft Corporation, 1991.

MLA (9th ed.) Citation

Microsoft MS-DOS User's Guide and Reference for the MS-DOS Operating System Version 5.0. Microsoft Corporation, 1991.