APA (7th ed.) Citation

IBM. (1988). IBM: Getting Started with Disk Operating System ver. 4.00. IBM.

Chicago Style (17th ed.) Citation

IBM. IBM: Getting Started with Disk Operating System Ver. 4.00. IBM, 1988.

MLA (8th ed.) Citation

IBM. IBM: Getting Started with Disk Operating System Ver. 4.00. IBM, 1988.

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