Gaya APA
Disk operating system : User's guide and reference verson 5.00. (1991).
New York:
IBM opration.
Gaya Chicago
Disk operating system : User's guide and reference verson 5.00.
1. cet 1.
New York:
IBM opration,
1991.
Text.
Gaya MLA
Disk operating system : User's guide and reference verson 5.00.
1. cet 1.
New York:
IBM opration,
1991.
Text.
Gaya Turabian
Disk operating system : User's guide and reference verson 5.00.
New York:
IBM opration,
1991.
Print.