APA (7th ed.) Citation

(1988). IBM getting started with disk operating system version 4.00. Perfect Bound Pub.

Chicago Style (17th ed.) Citation

IBM Getting Started with Disk Operating System Version 4.00. Quezon City: Perfect Bound Pub, 1988.

MLA (9th ed.) Citation

IBM Getting Started with Disk Operating System Version 4.00. Perfect Bound Pub, 1988.