APA (7th ed.) Citation

SYSTEM, D. O. (1987). DISK OPERATING SYSTEM VERSION 3.30 3.5" & 5.25"" DISKETES: PROGRAMMING FAMILY.". IBM.

Chicago Style (17th ed.) Citation

SYSTEM, DISK OPERATING. DISK OPERATING SYSTEM VERSION 3.30 3.5" & 5.25"" DISKETES: PROGRAMMING FAMILY.". IBM, 1987.

MLA (8th ed.) Citation

SYSTEM, DISK OPERATING. DISK OPERATING SYSTEM VERSION 3.30 3.5" & 5.25"" DISKETES: PROGRAMMING FAMILY.". IBM, 1987.

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