APA (7th ed.) Citation

Microsoft. (1984). Disk operating system: User's guide. IBM.

Chicago Style (17th ed.) Citation

Microsoft. Disk Operating System: User's Guide. [S.l.]: IBM, 1984.

MLA (8th ed.) Citation

Microsoft. Disk Operating System: User's Guide. IBM, 1984.

Warning: These citations may not always be 100% accurate.