APA (7th ed.) Citation

Microsoft Corporation. (1983). Disk operating system: Version 2.10. IBM.

Chicago Style (17th ed.) Citation

Microsoft Corporation. Disk Operating System: Version 2.10. Boca Raton, Fla: IBM, 1983.

MLA (9th ed.) Citation

Microsoft Corporation. Disk Operating System: Version 2.10. IBM, 1983.