Gaya APA
Disk operating system version 3.20 : refrences programming family. (1986).
[s.l]:
Machines.
Gaya Chicago
Disk operating system version 3.20 : refrences programming family.
.
[s.l]:
Machines,
1986.
Text.
Gaya MLA
Disk operating system version 3.20 : refrences programming family.
.
[s.l]:
Machines,
1986.
Text.
Gaya Turabian
Disk operating system version 3.20 : refrences programming family.
[s.l]:
Machines,
1986.
Print.