Gaya APA
Disk Operating System Version 3.30 : User's Guide. (1987).
Hoboken, NJ:
International Business Machines Corporation.
Gaya Chicago
Disk Operating System Version 3.30 : User's Guide.
1 1987.
Hoboken, NJ:
International Business Machines Corporation,
1987.
Printed Book.
Gaya MLA
Disk Operating System Version 3.30 : User's Guide.
1 1987.
Hoboken, NJ:
International Business Machines Corporation,
1987.
Printed Book.
Gaya Turabian
Disk Operating System Version 3.30 : User's Guide.
Hoboken, NJ:
International Business Machines Corporation,
1987.
Printed Book.